References
Reference
Carpenter, Kenneth (1996) A review of short-necked plesiosaurs from the Cretaceous of the Western Interior, North America; Neues Jahrbuch für Geologie und Palaontologie, 201(2), pp.259-287
A review of short-necked plesiosaurs from the Cretaceous of the Western Interior, North America
Principal Author
Kenneth Carpenter
Header
Academic paper
Journal
Neues Jahrbuch für Geologie und Palaontologie
Volume
201
Issue
2
Pages
259-287
Abstract
New specimens of Pliosauridae and Polycotylidae are described, including the new genus Plesiopleurodon from the Lower Cretaceous. The polycotylids Dolichorhynchops and Trinacromerum are separated by autapomorphies in the skull of Dolichorhynchops. Only Trinacromerum and Dolichorhynchops are known from enough specimens to be biostratigraphically useful. Trinacromerum has about a 3.3 million-year range straddling the Cenomanian-Turonian boundary, while Dolichorhynchops has a four million-year range in the Lowermost Campanian.
Language
English