Skip to Main Content
GEOREF RECORD

Archosaur footprints (cf. Brachychirotherium) with unusual morphology from the Upper Triassic Fleming Fjord Formation (Norian-Rhaetian) of East Greenland

Hendrik Klein, Jesper Milan, Lars B. Clemmensen, Nicolaj Frobose, Octavio Mateus, Nicole Klein, Jan Schulz Adolfssen, Eliza Jarl Estrup and Oliver Wings
Archosaur footprints (cf. Brachychirotherium) with unusual morphology from the Upper Triassic Fleming Fjord Formation (Norian-Rhaetian) of East Greenland (in Mesozoic biotas of Scandinavia and its Arctic territories, Benjamin P. Kear (editor), Johan Lindgren (editor), Jorn H. Hurum (editor), Jesper Milan (editor) and Vivi Vajda (editor))
Special Publication - Geological Society of London (2016) 434: 71-85

Abstract

The Orsted Dal Member of the Upper Triassic Fleming Fjord Formation in East Greenland is well known for its rich vertebrate fauna, represented by numerous specimens of both body and ichnofossils. In particular, the footprints of theropod dinosaurs have been described. Recently, an international expedition discovered several slabs with 100 small chirotheriid pes and manus imprints (pes length 4-4.5 cm) in siliciclastic deposits of this unit. They show strong similarities with Brachychirotherium, a characteristic Upper Triassic ichnogenus with a global distribution. A peculiar feature in the Fleming Fjord specimens is the lack of a fifth digit, even in more deeply impressed imprints. Therefore, the specimens are assigned here tentatively to cf. Brachychirotherium Possibly, this characteristic is related to the extremely small size and early ontogenetic stage of the trackmaker. The record from Greenland is the first evidence of this morphotype from the Fleming Fjord Formation. Candidate trackmakers are crocodylian stem group archosaurs; however, a distinct correlation with known osteological taxa from this unit is not currently possible. While the occurrence of sauropodomorph plateosaurs in the bone record links the Greenland assemblage more closer to that from the Germanic Basin of central Europe, here the described footprints suggest a Pangaea-wide exchange. SUPPLEMENTARY MATERIAL: Three-dimensional model of cf. Brachychirotherium pes-manus set (from MGUH 31233b) from the Upper Triassic Fleming Fjord Formation (Norian-Rhaetian) of East Greenland as pdf, ply and jpg files (3D model created by Oliver Wings; photographs taken by Jesper Milan) is available at https://doi.org/10.6084/m9.figshare.c.2133546


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 434
Title: Archosaur footprints (cf. Brachychirotherium) with unusual morphology from the Upper Triassic Fleming Fjord Formation (Norian-Rhaetian) of East Greenland
Title: Mesozoic biotas of Scandinavia and its Arctic territories
Author(s): Klein, HendrikMilan, JesperClemmensen, Lars B.Frobose, NicolajMateus, OctavioKlein, NicoleAdolfssen, Jan SchulzEstrup, Eliza JarlWings, Oliver
Author(s): Kear, Benjamin P.editor
Author(s): Lindgren, Johaneditor
Author(s): Hurum, Jorn H.editor
Author(s): Milan, Jespereditor
Author(s): Vajda, Vivieditor
Affiliation: Saurierwelt Palaeontologisches Museum, Neumarkt, Germany
Affiliation: Uppsala University, Uppsala, Sweden
Pages: 71-85
Published: 2016
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 80
Accession Number: 2016-087118
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 1 table, sketch map
N71°27'00" - N71°27'00", W22°23'60" - W22°23'60"
Secondary Affiliation: Geomuseum Faxe, DNK, DenmarkUniversity of Copenhagen, DNK, DenmarkUniversidade Nova de Lisboa, PRT, PortugalStaatliches Museum fuer Naturkunde Stuttgart, DEU, GermanyGeocenter Mons Klint, DNK, DenmarkNiedersaechsisches Landesmuseum Hannover, DEU, Germany
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201643
Close Modal

or Create an Account

Close Modal
Close Modal