Dinosaur skin impressions and associated skeletal remains from the upper Campanian of southwestern New Mexico: new data on the integument morphology of hadrosaurs
| Autor: | Spencer G. Lucas, Brian G. Anderson, Reese E. Barrick, George Basabilvazo, Andrew B. Heckert |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Journal of Vertebrate Paleontology. 18:739-745 |
| ISSN: | 1937-2809 0272-4634 |
| Popis: | Skin impressions from the tail region of an indeterminate hadrosaur recently excavated from the Upper Cretaceous Ringbone Formation, southwest New Mexico represent the first known dinosaur specimen from New Mexico with impressions of the integument preserved in association with skeletal remains. The mid- to distal-caudal region is represented by 20 articulated centra, other disarticulated centra, a single chevron, ossified tendons and fragmentary bone, including poorly preserved neural spines. The skin impressions are preserved in negative and positive relief between two very fine-grained sandstone beds, interpreted as part of a fluvio-lacustrine facies package. The impression surface is directly below the ossified tendons, and 2.5 m from the articulated vertebral column. The skin impressions are six discrete patches characterized by predominantly apical, circular to ovate tubercles. Measurements of the long and short axes of individual tubercles demonstrate that a distribution of relatively homo... |
| Databáze: | OpenAIRE |
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