Open AccessCorosaurus alcovensis Case and the phylogenetic interrelationships of Triassic stem‐group Sauropterygia
Author(s) -
RIEPPEL OLIVIER
Publication year - 1998
Publication title -
zoological journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.148
H-Index - 83
eISSN - 1096-3642
pISSN - 0024-4082
DOI - 10.1111/j.1096-3642.1998.tb00568.x
Subject(s) - paraphyly , biology , holotype , sister group , clade , taxon , phylogenetic tree , group (periodic table) , zoology , paleontology , evolutionary biology , taxonomy (biology) , gene , genetics , chemistry , organic chemistry
The holotype and other material of Corosaurus alcovensis Case from the Alcova Limestone of Casper, Wyoming, was further prepared using a combination of chemical techniques. Anatomical revision resulted in the definition of new characters for the analysis of the phylogenetic interrelationships of Triassic stem‐group Sauropterygia that document paraphyly of the Eusauropterygia. Corosaurus is the sister‐taxon to a clade comprising Cymatosaurus, Pistosaurus , and by extension, plesiosaurs and pliosaurs.