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New perspectives on the Late Triassic vertebrates of East Greenland: preliminary results of a Polish−Danish palaeontological expedition
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2014 (English)In: Polish Polar Research, ISSN 0138-0338, E-ISSN 2081-8262, Vol. 35, no 4, 541-552 p.Article in journal (Refereed) Published
Abstract [en]

The Fleming Fjord Formation (Jameson Land, East Greenland) documents a diverse assemblage of terrestrial vertebrates of Late Triassic age. Expeditions from the turn of the 21st century have discovered many important fossils that form the basis of our current knowledge of Late Triassic Greenlandic faunas. However, due to the scarcity and incompleteness of the fossils and their insufficient study, our understanding of the taxonomic diversity of the Fleming Fjord Formation is hindered. Here, we report the preliminary findings of a Polish−Danish expedition to the Fleming Fjord Formation that took place in 2014. Three areas were visited – the fairly well known MacKnight Bjerg and Wood Bjerg and the virtually unexplored Liasryggen. MacKnigth Bjerg and Liasryggen yielded fossils which promise to significantly broaden our knowledge of vertebrate evolution in the Late Triassic. Stem−mammal remains were discovered at Liasryggen. Other fossils found at both sites include remains of actinopterygians, sarcopterygians, temnospondyl amphibians and various archosaurs (including early dinosaurs). Numerous vertebrate trace fossils, including coprolites, pseudosuchian footprints, theropod and sauropodomorph dinosaur tracks, were also discovered. Newly discovered skeletal remains as well as abundant trace fossils indicate higher tetrapod diversity in the Late Triassic of Greenland than previously thought. Trace fossils also allow inferences of early theropod and sauropodomorph dinosaur behaviour.

Place, publisher, year, edition, pages
2014. Vol. 35, no 4, 541-552 p.
Keyword [en]
Arctic, Greenland, stem−mammals, dinosaurs, footprints, Fleming Fjord Formation, Late Triassic
National Category
Earth and Related Environmental Sciences
Research subject
Earth Science with specialization in Historical Geology and Palaeontology; Biology with specialization in Evolutionary Organismal Biology
URN: urn:nbn:se:uu:diva-241113DOI: 10.2478/popore-2014-0030ISI: 000346361100001OAI: oai:DiVA.org:uu-241113DiVA: diva2:777679
Available from: 2015-01-08 Created: 2015-01-08 Last updated: 2015-01-20Bibliographically approved

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Niedźwiedzki, Grzegorz
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Department of Organismal Biology
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