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The vertebrate-bearing Late Triassic Fleming Fjord Formation of central East Greenland revisited: stratigraphy, palaeoclimate and new palaeontological data

By
Lars B. Clemmensen
Lars B. Clemmensen
1
Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
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Jesper Milàn
Jesper Milàn
2
Geomuseum Faxe/Østsjællands Museum, Østervej 2, DK-4640 Faxe, Denmark
3
Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, DK-1350 Copenhagen K, Denmark
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Jan Schulz Adolfssen
Jan Schulz Adolfssen
2
Geomuseum Faxe/Østsjællands Museum, Østervej 2, DK-4640 Faxe, Denmark
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Eliza Jarl Estrup
Eliza Jarl Estrup
4
Geocenter Møns Klint, Stengårdsvej 8, DK-4751 Borre, Denmark
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Nicolai Frobøse
Nicolai Frobøse
1
Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
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Nicole Klein
Nicole Klein
5
Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany
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Octávio Mateus
Octávio Mateus
6
Department of Earth Sciences, GeoBioTec, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
7
Museu da Louriñha, Rua João Luis de Moura 95, 2530-158 Lourinhã, Portugal
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Oliver Wings
Oliver Wings
8
Niedersächsisches Landesmuseum Hannover, Willy-Brandt-Allee 5, 30169 Hannover, Germany
9
Museum für Naturkunde Berlin, Invalidenstraße 43, D-10115 Berlin, Germany
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Published:
January 01, 2016

Abstract

In Late Triassic (Norian–Rhaetian) times, the Jameson Land Basin lay at 40° N on the northern part of the supercontinent Pangaea. This position placed the basin in a transition zone between the relatively dry interior of the supercontinent and its more humid periphery. Sedimentation in the Jameson Land Basin took place in a lake–mudflat system and was controlled by orbitally forced variations in precipitation. Vertebrate fossils have consistently been found in these lake deposits (Fleming Fjord Formation), and include fishes, dinosaurs, amphibians, turtles, aetosaurs and pterosaurs. Furthermore, the fauna includes mammaliaform teeth and skeletal material. New vertebrate fossils were found during a joint vertebrate palaeontological and sedimentological expedition to Jameson Land in 2012. These new finds include phytosaurs, a second stem testudinatan specimen and new material of sauropodomorph dinosaurs, including osteologically immature individuals. Phytosaurs are a group of predators common in the Late Triassic, but previously unreported from Greenland. The finding includes well-preserved partial skeletons that show the occurrence of four individuals of three size classes. The new finds support a late Norian–early Rhaetian age for the Fleming Fjord Formation, and add new information on the palaeogeographical and palaeolatitudinal distribution of Late Triassic faunal provinces.

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Contents

Geological Society, London, Special Publications

Mesozoic Biotas of Scandinavia and its Arctic Territories

B. P. Kear
B. P. Kear
Uppsala University, Sweden
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J. Lindgren
J. Lindgren
Lund University, Sweden
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J. H. Hurum
J. H. Hurum
University of Oslo, Norway
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J. Milàn
J. Milàn
Geomuseum Faxe, Denmark
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V. Vajda
V. Vajda
Swedish Museum of Natural History, Sweden
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Geological Society of London
Volume
434
ISBN electronic:
9781862391581
Publication date:
January 01, 2016

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