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GEOREF RECORD

A partial plesiosaurian braincase from the Upper Cretaceous of Sweden

Sven Sachs, Johan Lindgren and Mikael Siversson
A partial plesiosaurian braincase from the Upper Cretaceous of Sweden (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: 293-301

Abstract

A partial exoccipital-opisthotic from the uppermost lower Campanian (Upper Cretaceous) of the Asen locality, Kristianstad Basin, southernmost Sweden, is described and illustrated. The fossil represents the first braincase element of a plesiosaur found in Sweden. It includes the chamber for the ampulla and utriculus, openings for the caudal vertical and horizontal semicircular canals, and four foramina for cranial nerves. The incomplete braincase can be referred to an elasmosaurid plesiosaur, and closely resembles the exoccipital-opisthotic of Libonectes morgani and a referred specimen of Aristonectes parvidens Although we discuss putative postcranial material of the elasmosaurid subfamily Aristonectinae in the uppermost lower Campanian of southernmost Sweden, the exoccipital-opisthotic from Asen most likely belongs to a juvenile individual of a non-aristonectine elasmosaur.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 434
Title: A partial plesiosaurian braincase from the Upper Cretaceous of Sweden
Title: Mesozoic biotas of Scandinavia and its Arctic territories
Author(s): Sachs, SvenLindgren, JohanSiversson, Mikael
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: Abteilung Geowissenschaften, Naturkundemuseum Bielefeld, Bielefeld, Germany
Affiliation: Uppsala University, Uppsala, Sweden
Pages: 293-301
Published: 2016
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 50
Accession Number: 2016-087130
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map
N56°08'56" - N56°08'56", E14°29'56" - E14°29'56"
Secondary Affiliation: Lund University, SWE, SwedenWestern Australian Museum, AUS, Australia
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
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