| |
| The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa ; Bulletin of the American Museum of Natural History, no. 302 |
| |||||||||||
| Download Problems | |
| Title: | The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa ; Bulletin of the American Museum of Natural History, no. 302 |
| Authors: | Nesbitt, Sterling J. |
| Issue Date: | 2007 |
| Publisher: | New York, NY : American Museum of Natural History |
| Series/Report no.: | Bulletin of the American Museum of Natural History, no. 302 |
| Abstract: | "Effigia okeeffeae is named based on a well-preserved nearly complete skeleton from the Upper Triassic (?Rhaetian) 'siltstone member' at Ghost Ranch, northern New Mexico. The skull is described and compared to other suchian and basal archosaurs. The maxilla and premaxilla are edentulous, and a rhamphotheca was possibly present in life. Effigia conclusively indicates that the skull of Shuvosaurus and the postcrania of 'Chatterjeea' belong to the same taxon. Furthermore, the close relationship between Shuvosaurus and Effigia indicates that both taxa are nested within the suchian clade and not within Ornithomimisauria. However, the similarity in features in the skull and postcrania of Effigia and ornithomimids suggests extreme convergence occurred between the two clades. A clade containing Arizonasaurus, Bromsgroveia, Poposaurus, Sillosuchus, Shuvosaurus, andEffigia is suggested based solely on shared derived character states. Additionally, a clade (Clade Y) containing Sillosuchus, Shuvos... |
| Description: | 84 p. : ill. ; 26 cm. Includes bibliographical references (p. 74-78). |
| URI: | http://hdl.handle.net/2246/5840 |
| Department of Library Services
American Museum of Natural History Central Park West at 79th St., New York, NY 10024 © American Museum of Natural History, 2006 Powered by DSpace
|
||