The basal mosasaurid Halisaurus sternbergii from the Late Cretaceous of Kansas (North America):: a review of the Uppsala type specimen

被引：12
|
作者：
Bardet, N
Suberbiola, XP
机构：
[1] Museum Natl Hist Nat, CNRS, UMR 8569, Lab Paleontol, F-75005 Paris, France
[2] Univ Basque Country, Fac Ciencias, Euskal Herriko Unibertsitatea, Dept Estratig & Paleontol, E-48080 Bilbao, Spain
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 2001年 / 332卷 / 06期
关键词：
Squamata; Mosasauridae; Halisaurus sternbergii; Late Cretaceous; North America;
D O I：
10.1016/S1251-8050(00)01486-5
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The type specimen of Clidastes sternbergii Wiman, 1920, a basal mosasaurid from the Santonian of Kansas (USA), is reviewed. Its attribution to Halisaurus is confirmed. H. sternbergii is mainly defined on the basis of cranial characters: frontal with a smooth dorsal surface bearing a prominent median ridge; parietal with a triangular table extending far posteriorly and bearing a medium sized circular foramen, which is located at a distance equal to twice its diameter from the frontal-parietal suture. The vertebral column and appendicular skeleton retain many plesiomorphies. H. sternbergii is the oldest species of the genus, also known in the Maastrichtian. (C) 2001 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.
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页码：395 / 402
页数：8
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