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  • 1.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Can fossils illuminate the evolution of gnathostome head development?2006In: European Society for Evolutionary Developmental Biology: The First and Founding Meeting, August 2006, Prague, 2006, p. 363-Conference paper (Other (popular scientific, debate etc.))
  • 2.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    CT scanning the nose of Eusthenopteron.2006In: Journal of Vertebrate Paleontology, ISSN 0272-4634, Vol. 26, no 3(supplement), p. 35A-Article in journal (Other scientific)
  • 3.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Fossils, developmental patterning and the origin of tetrapods.2003In: The new panorama of animal evolution, Pensoft Publishers, Sofia, Bulgaria , 2003, p. 45-54Chapter in book (Refereed)
  • 4.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Lär Livets Ords skola ut det?2007Other (Other (popular scientific, debate etc.))
  • 5.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Ovederhäftiga angrepp på klimatforskning.2007Other (Other (popular scientific, debate etc.))
  • 6.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Science set in stone2007In: Nature, ISSN 0028-0836, Vol. 447, p. 37-38Article, book review (Other (popular scientific, debate etc.))
  • 7.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Tankefrihet eller pseudovetenskap?2005Other (Other (popular scientific, debate etc.))
  • 8.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Tro, vetande och tankefrihet.2005Other (Other (popular scientific, debate etc.))
  • 9.
    Ahlberg, Per
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Botella, Hector
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Dorka, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Janvier, Philippe
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Andreolepis and Lophosteus: jaws, teeth and scales of the earliest bony fishes2007In: 40th Anniversary Symposium on Early Vertebrates/Lower Vertebrates Uppsala, Sweden, August 13-16, 2007, 2007, p. 14-Conference paper (Other scientific)
  • 10.
    Ahlberg, Per
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Clack, Jennifer
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The axial skeleton of the Devonian tetrapod Ichthyostega.2005In: Nature, ISSN 0028-0836, Vol. 437, no 7055, p. 137-140Article in journal (Refereed)
    Abstract [en]

    Ichthyostega was the first Devonian tetrapod to be subject to a whole-body reconstruction and remains, together with Acanthostega one of only two Devonian tetrapods for which near-complete postcranial material is available. It is thus crucially important for our understanding of the earliest stages of tetrapod evolution and terrestrialization. Based on extensive re-examination of original material, augmented by recently collected specimens, we present a new reconstruction of Ichthyostega that differs substantially from those previously published and reveals hitherto unrecognised regionalization in the vertebral column. Ichthyostega is the earliest vertebrate to show obvious adaptations for non-swimming locomotion. Uniquely among early tetrapods, the presacral vertebral column shows pronounced regionalization of neural arch morphology, suggesting that it was adapted for dorsoventral rather than lateral flexion.

  • 11.
    Ahlberg, Per
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clack, Jennifer
    Luksevics, Ervins
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Zupins, Ivars
    Ventastega curonica and the origin of tetrapod morphology2008In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 453, no 7199, p. 1199-1204Article in journal (Refereed)
    Abstract [en]

    The gap in our understanding of the evolutionary transition from fish to tetrapod is beginning to close thanks to the discovery of new intermediate forms such as Tiktaalik roseae. Here we narrow it further by presenting the skull, exceptionally preserved braincase, shoulder girdle and partial pelvis of Ventastega curonica from the Late Devonian of Latvia, a transitional intermediate form between the 'elpistostegids' Panderichthys and Tiktaalik and the Devonian tetrapods (limbed vertebrates) Acanthostega and Ichthyostega. Ventastega is the most primitive Devonian tetrapod represented by extensive remains, and casts light on a part of the phylogeny otherwise only represented by fragmentary taxa: it illuminates the origin of principal tetrapod structures and the extent of morphological diversity among the transitional forms

  • 12.
    Ahlberg, Per E.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Birth of the jawed vertebrates2009In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 457, p. 1094-1095Article in journal (Other academic)
    Abstract [en]

    The discovery of embryos in certain fossil fishes not only shows that internal fertilization and live birth evolved early in vertebrate history, but also raises questions about the origin of jawed vertebrates.

  • 13.
    Ahlberg, Per E.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Eusthenopteron foordi, Fossil Lobe-finned Fish. In Digital Morphology (DigiMorph)2007Other (Other (popular science, discussion, etc.))
  • 14.
    Ahlberg, Per E.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Fossils, developmental patterning and the origin of tetrapods2003In: The new panorama of animal evolution: Proceedings of the 18th international congress of zoology, Sofia and Moscow: Pensoft Publishers , 2003, p. 44-54Chapter in book (Other academic)
  • 15.
    Ahlberg, Per. E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, H.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology, Palaeontology group.
    Clack, J. A.
    The axial skeleton of the Devonian Tetrapod Ichthyostega2003In: The Gross Symposium 2. Advances in Palaeoichthyology. Riga, Latvia., 2003, p. 7-8Conference paper (Refereed)
  • 16.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, HenningUppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.Boisvert, CatherineUppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Forty years of Early Vertebrates: papers from the 11th International Symposium on Early and Lower Vertebrates2009Collection (editor) (Other academic)
  • 17.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Boisvert, Catherine
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Introduction: Forty years of Early Vertebrates: papers from the 11th International Symposium on Early and Lower Vertebrates.2009In: Forty years of Early Vertebrates: papers from the 11th International Symposium on Early and Lower Vertebrates., 2009, p. 1-2Conference paper (Refereed)
  • 18.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Brazeau, Martin
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clément, Gaël
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Snitting, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The virtual Eusthenopteron: inside the head of a Devonian lobe-fin with CT.2005Conference paper (Refereed)
  • 19.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Brazeau, Martin
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clément, Gaël
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Snitting, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The virtual Eusthenopteron: inside the head of a Devonian lobe-fin with CT. In A. Ivanov and G. Young (eds.), Middle Palaeozoic Vertebrates from Laurussia: Relationships with Siberia, Kazakhstan, Asia and Gondwana. Ichthyolith Issues Special Publication 9:3–4.2005Other (Other academic)
  • 20.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clack, J. A.
    Blom, H.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology, Palaeontology group.
    The axial skeleton of the Devonian Tetrapod Ichthyostega.2003In: 51st symposium of vertebrate palaeontology and comparative anatomy, Oxford University Museum of Natural History, Oxford, 2003, p. 3-Conference paper (Refereed)
  • 21.
    Ahlberg, Per E.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clack, Jennifer A.
    Palaeontology: A firm step from water to land2006In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 440, no 7085, p. 747-749Article in journal (Refereed)
  • 22.
    Ahlberg, Per E.
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Johanson, Zerina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Ericsson, Rolf
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Sutija, Margareta
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Boisvert, Catherine Anne
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Are digits neomorphic structures? New data from fin development in Neoceratodus2007In: Journal of Vertebrate Paleontology volume 27, supplement to number 3 p. 50A, 2007Conference paper (Refereed)
  • 23.
    Ahlberg, Per Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Sky konspiratörernas dimma - I: Uppsala Nya Tidning (UNT), 27 dec2008Other (Other (popular science, discussion, etc.))
  • 24.
    Ahlberg, Per Erik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Trinajstic, Kate
    Johanson, Zerina
    Long, John
    Pelvic claspers confirm chondrichthyan-like internal fertilization in arthrodires2009In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 460, no 7257, p. 888-889Article in journal (Refereed)
    Abstract [en]

    Recent finds(1,2) demonstrate that internal fertilization and   viviparity (live birth) were more widespread in the Placodermi, an   extinct group of armoured fishes, than was previously realized.   Placoderms represent the sister group of the crown group jawed   vertebrates (Gnathostomata)(3,4), making their mode(s) of reproduction   potentially informative about primitive gnathostome conditions. An   ossified pelvic fin basipterygium discovered in the arthrodire   Incisoscutum ritchiei was hypothesized to be identical in males and   females, with males presumed to have an additional cartilaginous   element or series forming a clasper. Here we report the discovery of a   completely ossified pelvic clasper in Incisoscutum ritchiei (WAM   03.3.28) which shows that this interpretation was incorrect: the   basipterygium described previously(1) is in fact unique to females. The   male clasper is a slender rod attached to a square basal plate that   articulates directly with the pelvis. It carries a small cap of dermal   bone covered in denticles and small hooks that may be homologous with   the much larger dermal component of the ptyctodont clasper.

  • 25.
    Ahlberg, Per
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Friedman, Matt
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    New light on the earliest known tetrapod jaw.2005In: Journal of Vertebrate Paleontology, ISSN 0272-4634, Vol. 25, no 3, p. 720-724Article in journal (Refereed)
  • 26.
    Ahlberg, Per
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Köntges, Georgy
    Homologies and cell populations: a response to Sánchez-Villagra and Maier.2006In: Evolution and Development, ISSN 1520-541X, Vol. 8, p. 116-118Article in journal (Other (popular scientific, debate etc.))
  • 27.
    Ahlberg, Per
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Smith, Moya
    MRC Centre for Developmental Neurobiology, King's College London, London SE1 1UL, UK.
    Johanson, Zerina
    Department of Biological Sciences and MUCEP, Department of Earth and Planetary Sciences, Macquarie University, Sydney 2010, Australia.
    Developmental plasticity and disparity in early dipnoan (lungfish) dentitions.2006In: Evolution & Development, ISSN 1520-541X, E-ISSN 1525-142X, Vol. 8, no 4, p. 331-349Article in journal (Refereed)
    Abstract [en]

    Although the lungfish (Dipnoi) belong within the Osteichthyes, their dentitions are radically different from other osteichthyans. Lungfish dentitions also show a uniquely high structural disparity during the early evolution of the group, partly owing to the independent variation of odontogenic and odontoclastic processes that are tightly and stereotypically coordinated in other osteichthyans. We present a phylogenetic analysis of early lungfishes incorporating a novel approach to coding these process characters in preference to the resultant adult dental morphology. The results only partially resolve the interrelationships of Devonian dipnoans, but show that the widely discussed hypothesis of separate tooth-plated, dentine-plated, and denticulated lineages is unlikely to be true. The dipnoan status of Diabolepis is corroborated. Lungfish dentitions seem to have undergone extensive and nonparsimonious evolution during the early history of the group, but much of the resulting disparity can be explained by a modest number of evolutionary steps in the underlying developmental processes, those for dental formation (odontogenic) and those for the remodeling of dentine tissue (odontoclastic). Later in lungfish evolution, this disparity was lost as the group settled to a pattern of dental development that is just as stereotypic as, but completely different from, that of other osteichthyans.

  • 28. Andrews, Mahala
    et al.
    Long, John
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Barwick, Richard
    Campbell, Kenton
    The structure of the sarcopterygian Onychodus jandemarrai n. sp. from Gogo, Western Australia: with a functional interpretation of the skeleton.2006In: Transactions of the Royal Society of Edinburgh: Earth Sciences, ISSN 0263-5933, Vol. 96, p. 197-307Article in journal (Refereed)
  • 29. Blieck, A.
    et al.
    Clément, G.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Lelièvre, H.
    Luksevics, E.
    Streel, M.
    Thorez, J.
    Young, G. C.
    The biostratigraphical and palaeogeographical framework of the earliest diversification of tetrapods (Late Devonian)2007In: Devonian Events and Correlations - SDS volume in honour of M. House, 2007, p. 219-235Chapter in book (Refereed)
  • 30.
    Blieck, Alain
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clement, Gael
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Leliévre, Herve
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Luksevics, Ervins
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Streel, Maurice
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Thorez, Jaques
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Young, Gavin
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The biostratigraphic and Palaeogeographic framework of the earliest diversification of tetrapods (Late Devonian) - a critical review2007In: Terrestrialization influenses on the Palaeozoic geosphere-biospere (Workshop ECLIPSE II, Paris, 8-9 october), 2007Conference paper (Other (popular scientific, debate etc.))
    Abstract [en]

    Ichthyostega was the first Devonian tetrapod to be subject to a whole-body reconstruction and remains, together with Acanthostega one of only two Devonian tetrapods for which near-complete postcranial material is available. It is thus crucially important for our understanding of the earliest stages of tetrapod evolution and terrestrialization. Based on extensive re-examination of original material, augmented by recently collected specimens, we present a new reconstruction of Ichthyostega that differs substantially from those previously published and reveals hitherto unrecognised regionalization in the vertebral column. Ichthyostega is the earliest vertebrate to show obvious adaptations for non-swimming locomotion. Uniquely among early tetrapods, the presacral vertebral column shows pronounced regionalization of neural arch morphology, suggesting that it was adapted for dorsoventral rather than lateral flexion.

  • 31.
    Blom, H.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology, Palaeontology group.
    Clack, J. A.
    Ahlberg, Per E.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The forelimb of the Devonian tetrapod Ichthyostega.2003In: 51st symposium of vertebrate palaeontology and comparative anatomy, Oxford University Museum of Natural History, Oxford., 2003, p. 6-Conference paper (Refereed)
  • 32.
    Blom, H.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology, Palaeontology group.
    Clack, J. A.
    Ahlberg, Per E.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Friedman, M.
    Devonian vertebrates from East Greenland: a review of faunal composition and distribution2003In: The Gross Symposium 2. Advances in Palaeoichthyology. Riga, Latvia., 2003, p. 13-Conference paper (Refereed)
  • 33.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Anaspid morphology and the shaping of the gnathostome body plan.2008In: Journal of Vertebrate Paleontology, ISSN 0272-4634, E-ISSN 1937-2809, Vol. 28, no 3, p. 54A-Article in journal (Refereed)
  • 34.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Anaspida2007In: McGraw-Hill Encyclopedia of Science and Technology, 10th Edition, 2007, p. 651-Chapter in book (Other (popular scientific, debate etc.))
  • 35.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Interrelationships and evolutionary history of the anaspid fishes.2005In: Journal of Vertebrate Paleontology, ISSN 0272-4634, Vol. 25, no 3, p. 28A-Article in journal (Refereed)
  • 36.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Recent Advances in the Origin and Early Radiation of Vertebrates. Arratia, G., Wilson, M. V. H. & Cloutier, R. (eds)2005In: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 142, no 6, p. 823-823Article, book review (Other (popular science, discussion, etc.))
  • 37.
    Blom, Henning
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Silurian and Lower Devonian thelodonts and putative chondrichthyans from the Canadian Artic Archipelago. Märss, T., Wilson M. V. H. & Thorsteinsson, R.2007In: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 144, no 6, p. 1032-1032Article, book review (Other academic)
  • 38.
    Blom, Henning
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland.2005In: Palaeontology, ISSN 0031-0239, Vol. 48, no 1, p. 111-134Article in journal (Refereed)
  • 39.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Clack, Jennifer
    The postcranial skeleton of the Devonian tetrapod Ichthyostega from East Greenland.2005In: GFF, ISSN 1103-5897, Vol. 127, p. 45-Article in journal (Other scientific)
  • 40.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Dorka, Marcus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Janvier, Philippe
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Andreolepis and Lophosteus: scales, jaws and teeth of the earliest bony fishes2007Conference paper (Other scientific)
  • 41.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Brazeau, MartinUppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    40th Anniversary Symposium on Early Vertebrates/Lower Vertebrates Uppsala, Sweden, August 13-16, 20072007Conference proceedings (editor) (Refereed)
  • 42.
    Blom, Henning
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Clack, Jennifer A.
    Ahlberg, Per Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Friedman, Matt
    Devonian vertebrates from East Greenland: a review of faunal composition and distribution2007In: Geodiversitas, ISSN 1280-9659, E-ISSN 1638-9395, Vol. 29, no 1, p. 119-141Article, review/survey (Refereed)
    Abstract [en]

    The Devonian vertebrate faunas of East Greenland are reviewed and their distribution discussed for the first time in the light of the most recently published stratigraphical framework for the area. The predominantly Middle and Upper Devonian continental sediments have yielded representatives of most major groups of early fossil vertebrates, including heterostracans, placoderms, acanthodians, chondrichthyans, actinopterygians, lungfishes, porolepiforms, "osteolepiforms" and tetrapods, but to date, no single publication has treated them all in their stratigraphical context. We therefore attempt to place them into the most recent, formalised lithostratigraphy, providing improved resolution for their stratigraphical distribution, as a basis for comparing East Greenland with other Devonian faunal successions worldwide. The review highlights the fact that many problems of stratigraphical correlation and dating of the East Greenland Devonian deposits remain to be resolved by further fieldwork. Several assemblages ranging from Givetian to Famennian in age can be distinguished, that correspond to older superceded subdivisional nomenclature. A possible Frasnian fauna has been recognised for the first time, adding details to an otherwise poorly dated part of the succession. Typical Devonian taxa such as Holoptychius Agassiz, 1839 and Groenlandaspis Heintz, 1932 have apparently been recorded in an otherwise unique position above the Devonian-Carboniferous boundary in the upper part of the succession. New specimens of rare elements of the fauna including an unknown arthrodire placoderm, a putative chondrichthyan spine and a patch of possibly regurgitated acanthodian spines, are illustrated for the first time.

  • 43.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Clack, Jennifer
    Ahlberg, Per
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Localities, distribution and stratigraphical context of the Late Devonian tetrapods of East Greenland.2005In: Meddelelser of Grönland, Geoscience, ISSN 0106-1046, Vol. 43, no 1, p. 4-50Article in journal (Refereed)
  • 44.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Goujet, D.
    Thelodont scales from the Lower Devonian Red Bay Group, Spitsbergen2002In: Palaeontology, Vol. 45, no 5, p. 795-820Article in journal (Refereed)
  • 45.
    Blom, Henning
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology. Evolutionär organismbiologi. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    Märss, T.
    Miller, C. G.
    Silurian and earliest Devonian Birkeniid anaspids from the northern Hemisphere2001In: Transactions of the Royal Society of Edinburgh. Earth sciences, ISSN 0263-5933, E-ISSN 1473-7116, Vol. 92, no 3, p. 263-323Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    The sculpture of scales and plates of articulated anaspids from the order Birkeniida is described and used to clarify the position of scale taxa previously left in open nomenclature. The dermal skeleton of a well-preserved squamation of Birkenia elegans Traquair, 1898 from the Silurian of Scotland shows a characteristic finely tuberculated sculpture over the whole body. Rhyncholepis parvula Kiær, 1911, Pterygolepis nitida (Kiær, 1911) and Pharyngolepis oblonga Kiær, 1911, from the Silurian of Norway show three other sculpture types. Northern Hemisphere disarticulated scales and plates are described here, supporting a new anaspid taxonomy that includes both articulated and disarticulated material. The diversity, distribution, evolutionary trends and biostratigraphy of anaspids are described in the context of this new taxonomy, which includes six families (two are new) subdivided into 16 genera (10 are new) and 22 species (15 are new).

    New taxa among Birkeniidae Traquair, 1898 are Birkenia robusta sp. nov. and Hoburgilepis papillata gen. et sp. nov.. Rhyncholepididae Kiær, 1924 includes Rhyncholepis butriangula sp. nov., Silmalepis erinacea gen. et sp. nov., Vesikulepis funiforma gen. et sp. nov., Maurylepis lacrimans gen. et sp. nov., and the previously described Schidiosteus mustelensis Pander, 1856 and Rytidolepis quenstedtii Pander, 1856. Tahulalepididae fam. nov. is represented by Tahulalepis elongituberculata gen. et sp. nov. and the revised T. kingi (Woodward, 1947). Septentrioniidae fam. nov. contains Septentrionia lancifera gen. et sp. nov., S. mucronata gen. et sp. nov., S. dissimilis gen. et sp. nov., S. seducta gen. et sp. nov., Liivilepis curvata gen. et sp. nov., Spokoinolepis alternans gen. et sp. nov. and Manbrookia asperella gen. et sp. nov. The family level position of Ruhnulepis longicostata gen. et sp. nov. is uncertain. Pterygolepididae Obruchev, 1964 and Pharyngolepididae Kiær, 1924 remain monogeneric.

  • 46.
    Blom, Henning
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Snitting, Daniel
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    40th Anniversary Symposium on Early Vertebrates/Lower Vertebrates Uppsala, Sweden. Post-conference field trip 17-20 August 2007 - Silurian of Gotland - Guidebook2007Other (Other (popular scientific, debate etc.))
  • 47.
    Boisvert, Catherine
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    A lobe-finned fish sheds new light on the origin of the tetrapod pelvic girdle.2005In: Journal of Vertebrate Paleontology, ISSN 0272-4634, Vol. 25, no 3, p. 38A-Article in journal (Other scientific)
  • 48.
    Boisvert, Catherine
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Pelvic girdle transformations from lobe-finned fish to tetrapods.2005In: PaleoBios, ISSN 0031-0298, Vol. 25, no 2 (supplement), p. 20-Article in journal (Other scientific)
  • 49.
    Boisvert, Catherine
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. Evolutionär organismbiologi.
    Pelvic morphology in sarcopterygians and tetrapods: novelties at the fish-tetrapod boundary.2005In: GFF, ISSN 1103-5897, Vol. 127, p. 45-Article in journal (Other (popular scientific, debate etc.))
  • 50.
    Boisvert, Catherine
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology.
    The humerus of Panderichthys in three dimensions and its significance in the context of the fish-tetrapod transition2009In: Acta Zoologica (Stockholm), ISSN 0001-7272, E-ISSN 1463-6395, Vol. 90, no suppl 1, p. 297-305Article in journal (Refereed)
    Abstract [en]

    The humerus of Panderichthyshas been considered to represent a transitionalform between that of tetrapodomorph fish such asEusthenopteronandtetrapods such asAcanthostega. The previous description was based onflattened material and was analysed in the context of the few fossils known atthe time. Since then, several new forms have been described such asGogonasus,Tiktaalikand an isolated humerus from the Catskill Formation. The humeralmorphology ofPanderichthys rhombolepisand its interpretation in this newcontext are therefore reassessed with the help of a three-dimensional modelproduced with themimicssoftware based on a computed tomography scan ofan unflattened specimen as well as comparisons with the originally describedmaterial. The humerus ofPanderichthysdisplays a combination of primitive,derived, intermediate and unique characteristics. It is very similar to themorphology ofTiktaalikbut when it differs from it, it is most often morederived despite the more basal phylogenetic position thatPanderichthysoccupies. What emerges from this study is a much more gradual transformationof the humerus morphology from fish to tetrapods and the ability to distinguishautapomorphies more easily. The picture is more complex than previouslybelieved, with many morphological specializations probably reflecting thebreadth of ecological specializations already present at the time.

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