Rayososaurus
| Rayososaurus | ||||||||||||
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| Temporal occurrence | ||||||||||||
| Lower Cretaceous ( Aptium ) | ||||||||||||
| 126.3 to 112.9 million years | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Rayososaurus | ||||||||||||
| Bonaparte , 1995 | ||||||||||||
| Art | ||||||||||||
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Rayososaurus is a genus of sauropod dinosaur from the Lower Cretaceous South America. There were fossils of an individual in the Rayoso lineup from the Apt-stage in the Argentine part of Patagonia salvaged and 1995 by Jose Fernando Bonaparte scientifically described are. The type species is Rayososaurus agrionensis . In1996,Calvo and Salgado still regard Rayososaurus as a nomen dubium , i.e. as a genus that cannot be assigned.
Fossil Rayososaurus is occupied only with a shoulder blade , a femur and part of the fibula . A fully grown specimen reached an estimated length of 6 meters and a weight of 6 tons. The shape of the shoulder blade shows Rayososaurus as Rebbachisauriden and thus as a sauropod. According to the plan of this group, it had a small head and a long neck and tail. Like all sauropods, it was a herbivore and moved quadruped , i.e. on four legs.
The Rebbachisaurus fossils found in Africa are almost identical to those of Rayososaurus . This is interpreted as evidence of the existence of a land bridge between Africa and South America during the Cretaceous . One of the two species then evolved allopatricically from the other when it migrated to a new land mass.
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. 186, online .
- ^ The Paleobiology Database . Last accessed on August 20, 2014.
- ↑ Jorge O. Calvo , Leonardo Salgado : A land bridge connection between South America and Africa during Albian-Cenomanian times based on sauropod dinosaur evidences. In: XXXIX Congresso Brasileiro de Geologia. Salvador-Bahia 1 a 6 Setembro de 1996. Vol. 7: Simposios e conferencias. Sociedade Brasileira de Geologia, Nucleo Bahia 1996, pp. 392–393, online (PDF; 15.58 kB) ( Memento of the original from April 6, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. .
- ↑ Manuel Alfredo Medeiros, Cesar Leandro Schultz: Rayososaurus (Sauropoda, Diplodocoidea) no meso-cretáceo do Norte-Nordeste brasileiro. In: Revista brasileira de Paleontologia. Vol. 7, No. 2, 2004, ISSN 1519-7530 , pp. 275-279, digitized version (PDF; 642.13 kB) .
- ^ Paul Upchurch , Paul M. Barrett , Peter Dodson : Sauropoda. 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. 259-324.
