Montanoceratops
Montanoceratops | ||||||||||||
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Montanoceratops fossil in the Royal Tyrrell Museum . |
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Temporal occurrence | ||||||||||||
Upper Cretaceous (Lower Maastrichtian ) | ||||||||||||
72 to 69.9 million years | ||||||||||||
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Montanoceratops | ||||||||||||
Sternberg , 1951 | ||||||||||||
Art | ||||||||||||
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Montanoceratops is a genus of the bird pelvic dinosaur (Ornithischia) from the group of Ceratopsia , within which it iscountedto the Leptoceratopsidae .
features
With a length of around 3 meters, Montanoceratops was one of the largest representatives of the Leptoceratopsidae. As with many Ceratopsia, its head was enlarged and characterized by the neck shield, which was formed from the parietal and scale bones . The snout formed from the rostral bone and the praedental was narrow, the teeth adapted to a vegetable diet. The nasal bone had a horn similar to that of many Ceratopsidae .
Discovery and naming
The fossil remains of Montanoceratops were discovered in the US state of Montana , there are also finds from Alberta ( Canada ). Brown and Schlaikjer first described it in 1942 as a member of the genus Leptoceratops , it was not until 1951 that Sternberg classified it as a genus of its own. The only known species is M. cerorhynchus . The generic name is made up of the place where it was found (Montana) and the Greek keratops (= "horn face"), a common part of the Ceratopsia name. The finds are dated in the late Upper Cretaceous (early Maastrichtian ) to an age of 72 to 69 million years.
Systematics
Along with Leptoceratops, Montanoceratops is the best-known representative of the Leptoceratopsidae , a group of dinosaurs found predominantly or even exclusively in North America in the Upper Cretaceous.
literature
- You Hailu, Peter Dodson : Basal Ceratopsia. In: David B. Weishampel , Peter Dodson, Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 478-493, digitized version (PDF; 807.25 kB) .
- David E. Fastovsky , David B. Weishampel: The Evolution and Extinction of the Dinosaurs. 2nd edition. Cambridge University Press, Cambridge et al. 2005, ISBN 0-521-81172-4 .
Web links
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. 254, online .