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  • 1. Garrouste, Romain
    et al.
    Clement, Gael
    Nel, Patricia
    Engel, Michael S.
    Grandcolas, Philippe
    D'Haese, Cyrille A.
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Denayer, Julien
    Gueriau, Pierre
    Lafaite, Patrick
    Olive, Sebastien
    Prestianni, Cyrille
    Nel, Andre
    Is Strudiella a Devonian insect?: Reply2013In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 494, no 7437, p. E4-E5Article in journal (Refereed)
  • 2. Garrouste, Romain
    et al.
    Clement, Gael
    Nel, Patricia
    Engel, Michael S.
    Grandcolas, Philippe
    D'Haese, Cyrille
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Denayer, Julien
    Gueriau, Pierre
    Lafaite, Patrick
    Olive, Sebastien
    Prestianni, Cyrille
    Nel, Andre
    A complete insect from the Late Devonian period2012In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 488, no 7409, p. 82-85Article in journal (Refereed)
    Abstract [en]

    After terrestrialization, the diversification of arthropods and vertebrates is thought to have occurred in two distinct phases(1), the first between the Silurian and the Frasnian stages (Late Devonian period) (425-385 million years (Myr) ago), and the second characterized by the emergence of numerous new major taxa, during the Late Carboniferous period (after 345 Myr ago). These two diversification periods bracket the depauperate vertebrate Romer's gap (360-345 Myr ago) and arthropod gap (385-325 Myr ago)(1), which could be due to preservational artefact(2,3). Although a recent molecular dating has given an age of 390 Myr for the Holometabola(4), the record of hexapods during the Early-Middle Devonian (411.5-391 Myr ago, Pragian to Givetian stages) is exceptionally sparse and based on fragmentary remains, which hinders the timing of this diversification. Indeed, although Devonian Archaeognatha are problematic(5,6), the Pragian of Scotland has given some Collembola and the incomplete insect Rhyniognatha, with its diagnostic dicondylic, metapterygotan mandibles(5,7). The oldest, definitively winged insects are from the Serpukhovian stage (latest Early Carboniferous period)(8). Here we report the first complete Late Devonian insect, which was probably a terrestrial species. Its 'orthopteroid' mandibles are of an omnivorous type, clearly not modified for a solely carnivorous diet. This discovery narrows the 45-Myr gap in the fossil record of Hexapoda, and demonstrates [GRAPHICS] further a first Devonian phase of diversification for the Hexapoda, as in vertebrates, and suggests that the Pterygota diversified before and during Romer's gap.

  • 3.
    Gueriau, Pierre
    et al.
    Univ Paris 06, CNRS, MNHN,CR2P,UMR 7207, Univ Paris 04,Ctr Rech Paleobiodiversite & Paleoe, 57 Rue Cuvier,CP 38, F-75005 Paris, France.;Museum Natl Hist Nat, 57 Rue Cuvier,CP 38, F-75005 Paris, France.;Univ Paris Saclay, IPANEMA, CNRS, Minist Culture & Commun,USR3461, F-91192 Gif Sur Yvette, France.;Synchrotron SOLEIL, BP 48 St Aubin, F-91192 Gif Sur Yvette, France..
    Rabet, Nicolas
    Univ Paris 06, Univ Paris 04, MNHN,BOREA,UMR 7208, UCBN,CNRS,IRD,Unite Biol Organismes & Ecosyst Aqu, 57 Rue Cuvier,CP 26, F-75005 Paris, France.;Museum Natl Hist Nat, 57 Rue Cuvier,CP 26, F-75005 Paris, France..
    Clement, Gael
    Univ Paris 06, CNRS, MNHN,CR2P,UMR 7207, Univ Paris 04,Ctr Rech Paleobiodiversite & Paleoe, 57 Rue Cuvier,CP 38, F-75005 Paris, France.;Museum Natl Hist Nat, 57 Rue Cuvier,CP 38, F-75005 Paris, France..
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Vannier, Jean
    Univ Lyon 1, UMR CNRS 5276, Lab Geol Lyon Terre Planetes Environm LGLTPE, Geode, Campus LyonTech la Doua,2 Rue Dubois, F-69622 Villeurbanne, France..
    Briggs, Derek E. G.
    Yale Univ, Dept Geol & Geophys, POB 208109, New Haven, CT 06520 USA.;Yale Univ, Yale Peabody Museum Nat Hist, POB 208109, New Haven, CT 06520 USA..
    Charbonnier, Sylvain
    Univ Paris 06, CNRS, MNHN,CR2P,UMR 7207, Univ Paris 04,Ctr Rech Paleobiodiversite & Paleoe, 57 Rue Cuvier,CP 38, F-75005 Paris, France.;Museum Natl Hist Nat, 57 Rue Cuvier,CP 38, F-75005 Paris, France..
    Olive, Sebastien
    Royal Belgian Inst Nat Sci, Directorate Earth & Hist Life Palaeobiosphere & E, Rue Vautier 29, B-1000 Brussels, Belgium.;Univ Liege, Dept Geol, Evolut & Div Dynam Lab, B18,Allee Six Aout, B-4000 Liege, Belgium..
    Bethoux, Olivier
    Univ Paris 06, CNRS, MNHN,CR2P,UMR 7207, Univ Paris 04,Ctr Rech Paleobiodiversite & Paleoe, 57 Rue Cuvier,CP 38, F-75005 Paris, France.;Museum Natl Hist Nat, 57 Rue Cuvier,CP 38, F-75005 Paris, France..
    A 365-Million-Year-Old Freshwater Community Reveals Morphological and Ecological Stasis in Branchiopod Crustaceans2016In: Current Biology, ISSN 0960-9822, E-ISSN 1879-0445, Vol. 26, no 3, p. 383-390Article in journal (Refereed)
    Abstract [en]

    Branchiopod crustaceans are represented by fairy, tadpole, and clam shrimps (Anostraca, Notostraca, Laevicaudata, Spinicaudata), which typically inhabit temporary freshwater bodies, and water fleas (Cladoceromorpha), which live in all kinds of freshwater and occasionally marine environments [1, 2]. The earliest branchiopods occur in the Cambrian, where they are represented by complete body fossils from Sweden such as Rehbachiella kinnekullensis [3] and isolated mandibles preserved as small carbonaceous fossils [4-6] from Canada. The earliest known continental branchiopods are associated with hot spring environments [7] represented by the Early Devonian Rhynie Chert of Scotland (410 million years ago) and include possible stem-group or crown-group Anostraca, Notostraca, and clam shrimps or Cladoceromorpha [8-10], which differmorphologically fromtheirmodern counterparts [1, 2, 11]. Here we report the discovery of an ephemeral pool branchiopod community from the 365-million-year-old Strud locality of Belgium. It is characterized by new anostracans and spinicaudatans, closely resembling extant species, and the earliest notostracan, Strudops goldenbergi [12]. These branchiopods released resting eggs into the sediment in a manner similar to their modern representatives [1, 2]. We infer that this reproductive strategy was critical to overcoming environmental constraints such as seasonal desiccation imposed by living on land. The pioneer colonization of ephemeral freshwater pools by branchiopods in the Devonian was followed by remarkable ecological and morphological stasis that persists to the present day.

  • 4. Gueriau, Pierre
    et al.
    Rabet, Nicolas
    CLément, Gaël
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Charbonnier, Sylvain
    Olive, Sébastien
    Béthoux, Olivier
    The ephemeral pool crustacean community unchanged since the Late DevonianManuscript (preprint) (Other academic)
  • 5.
    Janssen, Ralf
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Jorgensen, Mette
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Budd, Graham E.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Fate and nature of the onychophoran mouth-anus furrow and its contribution to the blastopore2015In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 282, no 1805, article id 20142628Article in journal (Refereed)
    Abstract [en]

    The ancestral states of bilaterian development, and which living groups have conserved them the most, has been a controversial topic in biology for well over a hundred years. In recent years, the idea that gastrulation primitively proceeded via the formation of a slit-like blastopore that then evolved into either protostomy or deuterostomy has gained renewed attention and some molecular developmental support. One of the key pieces of evidence for this 'amphistomy' theory comes from the onychophorans, which form a clear ventral groove during gastrulation. The interpretation of this structure has, however, proved problematic. Based on expression patterns of forkhead (fkh), caudal (cad), brachyury (bra) and wingless (wg/Wnt1), we show that this groove does not correspond to the blastopore, even though both the mouth and anus later develop from it. Rather, the posterior pit appears to be the blastopore; the posterior of the groove later fuses with it to form the definitive anus. Onychophoran development therefore represents a case of 'concealed' deuterostomy. The new data from the onychophorans thus remove one of the key pieces of evidence for the amphistomy theory. Rather, in line with other recent results, it suggests that ancestral bilaterian development was deuterostomic.

  • 6.
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    The Arthropod Assemblage of the Upper Devonian Strud locality and its Ecology2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The Devonian (419-359 million years ago) is the geological period when the terrestrial biota fully established. Early representatives from a terrestrial and continental aquatic biota have previously been reported from the Upper Devonian (Famennian) Strud quarry in Belgium, in the shape of seed-bearing plants and vertebrates (fish and early tetrapods). The palaeoenvironment is interpreted as a floodplain with slow accumulation of sediment in the river channels and adjacent shallow pools, subject to seasonal flooding and desiccation. This thesis presents the upper Famennian Strud ecosystem with representatives from the largest animal phylum – the Arthropoda. Pancrustaceans are dominating the arthropod assemblage by two eumalacostracans (previously described), three groups of branchiopods, and a putative insect, all collected in fine shales likely deposited in the shallow pools. The branchiopods from Strud comprise new members from all three extant clades, i.e. notostracans, anostracans, and spinicaudatan diplostracans. The notostracan Strudops goldenbergi is remarkable for its close resemblance with the extant genus Triops by the overall body plan and telson morphology. A phylogenetic analysis including modern and extinct notostracans and anostracans was performed, where Strudops appears as the earliest undisputed notostracan ever found. In addition, new genera of Anostraca (Haltinnaias serrata) and Spinicaudata (Gesvestheria pernegrei) are described herein. The insect Strudiella devonica consists of a single specimen and is interpreted to have been a nymph due to its minute size and wingless appearance. The chelicerates are represented by one or several species of eurypterids. So far unnamed juvenile eurypterid remains have also been found within the pool strata, and fragments of adult individuals in the coarser river deposits. The branchiopod community displays a unique insight to the ecosystem that these crustaceans inhabited. This is partly because of their co-occurrence, but mainly because they are preserved in close association to draught-resistant encysted eggs, in the same manner as modern day branchiopods do to survive and disperse during periods of drought and freezing. Altogether, the arthropod assemblage offers insight to Late Devonian freshwater ecosystems, and provides further understanding of the evolution of respective groups.

    List of papers
    1. A complete insect from the Late Devonian period
    Open this publication in new window or tab >>A complete insect from the Late Devonian period
    Show others...
    2012 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 488, no 7409, p. 82-85Article in journal (Refereed) Published
    Abstract [en]

    After terrestrialization, the diversification of arthropods and vertebrates is thought to have occurred in two distinct phases(1), the first between the Silurian and the Frasnian stages (Late Devonian period) (425-385 million years (Myr) ago), and the second characterized by the emergence of numerous new major taxa, during the Late Carboniferous period (after 345 Myr ago). These two diversification periods bracket the depauperate vertebrate Romer's gap (360-345 Myr ago) and arthropod gap (385-325 Myr ago)(1), which could be due to preservational artefact(2,3). Although a recent molecular dating has given an age of 390 Myr for the Holometabola(4), the record of hexapods during the Early-Middle Devonian (411.5-391 Myr ago, Pragian to Givetian stages) is exceptionally sparse and based on fragmentary remains, which hinders the timing of this diversification. Indeed, although Devonian Archaeognatha are problematic(5,6), the Pragian of Scotland has given some Collembola and the incomplete insect Rhyniognatha, with its diagnostic dicondylic, metapterygotan mandibles(5,7). The oldest, definitively winged insects are from the Serpukhovian stage (latest Early Carboniferous period)(8). Here we report the first complete Late Devonian insect, which was probably a terrestrial species. Its 'orthopteroid' mandibles are of an omnivorous type, clearly not modified for a solely carnivorous diet. This discovery narrows the 45-Myr gap in the fossil record of Hexapoda, and demonstrates [GRAPHICS] further a first Devonian phase of diversification for the Hexapoda, as in vertebrates, and suggests that the Pterygota diversified before and during Romer's gap.

    National Category
    Earth and Related Environmental Sciences
    Identifiers
    urn:nbn:se:uu:diva-179552 (URN)10.1038/nature11281 (DOI)000307010700037 ()
    Available from: 2012-08-20 Created: 2012-08-20 Last updated: 2017-12-07Bibliographically approved
    2. Is Strudiella a Devonian insect?: Reply
    Open this publication in new window or tab >>Is Strudiella a Devonian insect?: Reply
    Show others...
    2013 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 494, no 7437, p. E4-E5Article in journal, Letter (Refereed) Published
    National Category
    Natural Sciences
    Identifiers
    urn:nbn:se:uu:diva-219280 (URN)10.1038/nature11888 (DOI)000315312900051 ()
    Available from: 2014-02-27 Created: 2014-02-25 Last updated: 2017-12-05Bibliographically approved
    3. The oldest notostracan (Upper Devonian Strud locality, Belgium)
    Open this publication in new window or tab >>The oldest notostracan (Upper Devonian Strud locality, Belgium)
    Show others...
    2015 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 58, no 3, p. 497-509Article in journal (Refereed) Published
    Abstract [en]

    A new notostracan crustacean, Strudops goldenbergi gen. et sp. nov., is described from the well-preserved terrestrial arthropod fauna of the Upper Devonian of Strud, Belgium. The fossil notostracan bears a close resemblance to modern notostracans in possessing a large, simple head shield covering almost half of the whole body, a set of phyllopodous thoracic appendages and a legless posterior abdomen with a telson bearing a caudal furca. The differentiation and relative size of mouthparts and limbs suggest that these specimens are all adults. The notostracans described herein are the earliest clear members of the total group Notostraca.

    National Category
    Geology
    Identifiers
    urn:nbn:se:uu:diva-247753 (URN)10.1111/pala.12155 (DOI)000353398000006 ()
    Available from: 2015-03-23 Created: 2015-03-23 Last updated: 2017-12-04Bibliographically approved
    4. The ephemeral pool crustacean community unchanged since the Late Devonian
    Open this publication in new window or tab >>The ephemeral pool crustacean community unchanged since the Late Devonian
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Earth and Related Environmental Sciences
    Identifiers
    urn:nbn:se:uu:diva-247754 (URN)
    Available from: 2015-03-23 Created: 2015-03-23 Last updated: 2015-07-07
    5. Stylonurine eurypterids from the Upper Devonian Strud locality, Belgium
    Open this publication in new window or tab >>Stylonurine eurypterids from the Upper Devonian Strud locality, Belgium
    (English)Manuscript (preprint) (Other academic)
    National Category
    Earth and Related Environmental Sciences
    Identifiers
    urn:nbn:se:uu:diva-247755 (URN)
    Available from: 2015-03-23 Created: 2015-03-23 Last updated: 2015-07-07
  • 7.
    Lagebro, Linda
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Clément, Gaël
    Département Histoire de la Terre, Muséum national d'Histoire naturelle, France.
    THE ARTHROPOD FAUNA OF THE UPPER DEVONIAN TETRAPOD-BEARING LOCALITY OF STRUD, BELGIUM2011In: The 2nd Wiman meeting: Carl Wimans legacy: 100 years of Swedish Palaeontology / [ed] Benjamin P. Kear and Michael Streng, Uppsala, 2011Conference paper (Refereed)
    Abstract [en]

    Abstract: The Upper Devonian locality of Strud, Namur Province, Belgium, has since its discovery in 2005 yielded substantial collections of vertebrate, invertebrate and plant fossils. The locality is mostly known for its flora and vertebrate fauna, but also shows exceptional preservation of arthropods. The arthropod faunas primarily comprise of branchiopod and malacostracan crustaceans. Additionally, eurypterid remains have been found, and also assumed encysted branchiopod eggs. Here we present the branchiopod material, composed of Notostraca, Anostraca and Spinicaudata, with emphasis on the former. The specimens are embedded in silty sandstone and evaporitic dolomite. The depositional environment is interpreted as a fluvial estuary. The resting eggs indicate that the area suffered episodic desiccation, a phenomenon typical of the life cycle of modern branchiopods.

    Keywords: Notostraca, Anostraca, Spinicaudata, Famennian, Belgium

  • 8.
    Lagebro, Linda
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Gueriau, Pierre
    Edgecombe, Gregory D
    Budd, Graham E
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Stylonurine eurypterids from the Upper Devonian Strud locality, BelgiumManuscript (preprint) (Other academic)
  • 9.
    Lagebro, Linda
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Gueriau, Pierre
    Hegna, Thomas A
    Rabet, Nicolas
    Butler, Aodhan
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Budd, Graham E
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    The oldest notostracan (Upper Devonian Strud locality, Belgium)2015In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 58, no 3, p. 497-509Article in journal (Refereed)
    Abstract [en]

    A new notostracan crustacean, Strudops goldenbergi gen. et sp. nov., is described from the well-preserved terrestrial arthropod fauna of the Upper Devonian of Strud, Belgium. The fossil notostracan bears a close resemblance to modern notostracans in possessing a large, simple head shield covering almost half of the whole body, a set of phyllopodous thoracic appendages and a legless posterior abdomen with a telson bearing a caudal furca. The differentiation and relative size of mouthparts and limbs suggest that these specimens are all adults. The notostracans described herein are the earliest clear members of the total group Notostraca.

  • 10. Lagebro, Linda
    et al.
    Stein, Martin
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Peel, John S.
    A new arthropod from the early Cambrian Sirius Passet Fauna of North GreenlandManuscript (Other academic)
  • 11.
    Lamsdell, James C.
    et al.
    West Virginia Univ, Dept Geol & Geog, 98 Beechurst Ave, Morgantown, WV 26505 USA.
    Lagebro, Linda
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Edgecombe, Gregory D.
    Nat Hist Museum, Dept Earth Sci, Cromwell Rd, London SW7 5BD, England.
    Budd, Graham
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Gueriau, Pierre
    Univ Lausanne, Inst Earth Sci, Geopolis, CH-1015 Lausanne, Switzerland.
    Stylonurine eurypterids from the Strud locality (Upper Devonian, Belgium): new insights into the ecology of freshwater sea scorpions2019In: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 156, no 10, p. 1708-1714Article in journal (Refereed)
    Abstract [en]

    The Upper Famennian (Upper Devonian) Strud locality has yielded very abundant and diversified flora as well as vertebrate and arthropod faunas. The arthropod fauna, mostly recovered from fine shales deposited in a calm, confined floodplain habitat including temporary pools, has delivered a putative insect and various crustaceans including eumalacostracans and notostracan, spinicaudatan and anostracan branchiopods. Here we present the Strud eurypterids, consisting of semi-articulated juvenile specimens assigned to Hardieopteridae recovered from the pool and floodplain deposits, as well as larger isolated fragments of potential adults recovered from stratigraphically lower, coarser dark sandy layers indicative of a higher-energy fluvial environment. The Strud fossils strongly suggest that, as proposed for some Carboniferous eurypterids, juvenile freshwater eurypterids inhabited sheltered nursery pools and migrated to higher-energy river systems as they matured.

1 - 11 of 11
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