Cerasinops
| Cerasinops | ||||||||||||
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Live reconstruction of Cerasinops |
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| Temporal occurrence | ||||||||||||
| Upper Cretaceous ( Santonium ) | ||||||||||||
| 86.3 to 83.6 million years | ||||||||||||
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| Scientific name | ||||||||||||
| Cerasinops | ||||||||||||
| Chinnery & Horner , 2007 | ||||||||||||
| Art | ||||||||||||
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Cerasinops is a genus of the bird pelvis dinosaur (Ornithischia) from the group of Ceratopsia .
features
Cerasinops was a relatively small, around 1 meter tall dinosaur. As with all Ceratopsia, the elongated snout was formed from the rostral bone and the praedentale . The intermaxillary bone (in front of the maxillary bone) was provided with teeth, which is a primeval feature. As with many Ceratopsia, the head was big and massive, at the rear end there was the neck shield typical of this group of dinosaurs, which was comparatively short but high. The teeth were adapted to a vegetable diet.
The front legs were significantly shorter than the rear legs, and Cerasinops should have moved biped (on two legs) most of the time .
Discovery and naming
The Cerasinops fossil remains were discovered in the Two Medicine Formation in the US state of Montana . The finds were known by the nickname "Cera" for over two decades before they were first formally described in 2007. The name is derived from the Latin cerasinus ("belonging to the cherry", a reference to the nickname and an allusion to the dark red color of the finds) and the Greek ops ("face"). Type species and only known species is C. hodgskissi . The finds are dated in the Upper Cretaceous ( santonium ) to an age of 86 to 84 million years.
Systematics
Cerasinops is classified within the Ceratopsia as a primitive representative of the Neoceratopsia . The dinosaur represents an important transitional form between the primeval Asian and the more highly developed North American Ceratopsia. The teeth in the intermaxillary bone are a feature of the Asian animals and otherwise unknown in North American Ceratopsia, while the wear marks on the teeth are similar to those of the North American animals. Cladistic analyzes position Cerasinops as a sister taxon of the Leptoceratopsidae .
literature
- Brenda J. Chinnery, John R. Horner : A new neoceratopsian dinosaur linking North American and Asian taxa. In: Journal of Vertebrate Paleontology. Vol. 27, No. 3, 2007, ISSN 0272-4634 , pp. 625-641, doi : 10.1671 / 0272-4634 (2007) 27 [625: ANNDLN] 2.0.CO; 2 .
Individual evidence
- ^ Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ et al. 2010, ISBN 978-0-691-13720-9 , p. 251, online ( memento of the original of July 13, 2015 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. .
