References
Reference
Carpenter, Kenneth (1999) Revision of North American elasmosaurs from the Cretaceous of the Western Interior; Paludicila, 2(2), pp.148-173
Revision of North American elasmosaurs from the Cretaceous of the Western Interior
Principal Author
Kenneth Carpenter
Header
Academic paper
Journal
Paludicila
Volume
2
Issue
2
Pages
148-173
Abstract
A review of Narth American elasmosaurs from the Ctemoeous ofthe Western Interior recognizes only five valid genera and species: Elasmosaurus platyurus, Hydlalmmosarus serpentius, Libonectes morgani. Styxosaurus snowii, and Thallassomedon hanningtoni. Alzadasaurus kansasensis, A. pembertoni and Thallassomosaurus marshi form an ontogenedc series of Styxosaurus snowii fiom the Smoky Hill Chalk and Sharon Springs Member of the Pierre Shale, The holotype of the genus Alzadasaurus is synonymized with Thalassamedon, leaving "Alzadasaurus" columbiensis without a generic name, therefore a new name is proposed. A preliminary phyletic analysis of Pistosaurus, Plesiosauridae, Cryptoclididae, and Elasmosauridae is presented
Language
English