Parrisia neocesariensis, a new batrachosauroidid salamander and other amphibians from the Campanian of eastern North America
| Autor: | Robert C. O'Neill, Robert K. Denton |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Journal of Vertebrate Paleontology. 18:484-494 |
| ISSN: | 1937-2809 0272-4634 |
| DOI: | 10.1080/02724634.1998.10011076 |
| Popis: | The Ellisdale site (Late Cretaceous, Campanian), Monmouth County, New Jersey, has produced the first representative fossil amphibian specimens from the Cretaceous of eastern North America. The known fauna includes indeterminate pelobatid and discoglossid frogs, an amphiumid (cf. Proamphiuma sp.), and a sirenian (cf. Habrosaurus sp.), however, the most abundant caudate remains are from a previously undescribed genus of batrachosauroidid salamander, herein described as Parrisia neocesariensis gen. et sp. nov. The genus Parrisia is established as batrachosauroidid by: an atlas with deeply concave anterior cotyles; lack of a well developed atlantal intercotylar process; and a ring or dome of calcified cartilage on the opisthocoelus vertebral condyles bearing a persistent notochordal pit. It differs from the other members of the family, including Opisthotriton and Prodesmodon (Late Cretaceous, western North America) by the presence of: unossified neural spine tips; paired caudal intravertebral nerve o... |
| Databáze: | OpenAIRE |
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