Limaysaurus
| Limaysaurus | ||||||||||||
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Limaysaurus skeletal reconstruction |
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| Temporal occurrence | ||||||||||||
| Upper Cretaceous (early Cenomanian ) | ||||||||||||
| 100.5 to 96.2 million years | ||||||||||||
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| Scientific name | ||||||||||||
| Limaysaurus | ||||||||||||
| Salgado et al., 2004 | ||||||||||||
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Limaysaurus is a genus of sauropod dinosaur from the Rebbachisauridae family thatlivedin what is now Argentina during the Early Upper Cretaceous (Lower Cenomanium ). The only species is Limaysaurus tessonei .
Limaysaurus tessonei was originally described as Rebbachisaurus tessonei by Jorge Calvo and Leonardo Salgado in 1995. The genus Limaysaurus was first mentioned in 2004 by Leonardo Salgado and colleagues. Limaysaurus was named after the Río Limay . The holotype , MUCPv-205, consists of a partial skeleton, including part of the skull, and was found by Lieto Francisco Tessone in 1988; the species name was named after him. This skeleton and another, MUCPv-206, were examined by José Bonaparte . Further Limaysaurus material was found between 1995 and 2002 in the Lohan Cura Formation in Neuquén in northwest Argentina . These so-called "bonebeds" are around 112 million years old.
Limaysaurus was a medium-sized sauropod. Gregory S. Paul (2010) estimate its length at around 15 m and its weight at around 7 tons. The neural spines on his back were very high.
Salgado et al. (2004) considers Limaysaurus to be a Rebbachisaurid . The Rebbachisauridae is a basal family of the Diplodocoidea and was found in South America , Europe and Africa . A cladistic analysis (Salgado et al., 2004) shows a close relationship between Limaysaurus , Rebbachisaurus and Nigersaurus . Withlock (2011) came to the conclusion that Limaysaurus was a close relative of Cathartesaura and summarized them to Limaysaurinae . These are a sister taxon of the Nigersaurinae , which includes the genera Nigersaurus , Zapalasaurus and Demandasaurus . Together with the basic ( primeval ) genera Rebbachisaurus and Histriasaurus, these form the family Rebbachisauridae . The following is a cladogram according to Withlock (2011):
| Rebbachisauridae |
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Individual evidence
- ^ A b 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 .
- ^ Jorge O. Calvo , Leonardo Salgado : Rebbachisaurus tessonei sp. nov. A new sauropoda from the Albian-Cenomanian of Argentina; new evidence on the origin of the Diplodocidae. In: Gaia. Revista de Geociências. Vol. 11, 1995, ISSN 0871-5424 , pp. 13-33, digital version (PDF; 8.57 MB) .
- ↑ a b c Leonardo Salgado, Alberto Garrido, Sergio E. Cocca, Juan R. Cocca: Lower Cretaceous rebbachisaurid sauropods from Cerro Aguada Del León, Neuquén Province, northwestern Patagonia, Argentina. In: Journal of Vertebrate Paleontology. Vol. 24, No. 4, 2004, ISSN 1062-161X , pp. 903-912, doi : 10.1671 / 0272-4634 (2004) 024 [0903: LCRSFC] 2.0.CO; 2 .
- ^ John A. Whitlock: A phylogenetic analysis of Diplodocoidea (Saurischia: Sauropoda). In: Zoological Journal of the Linnean Society. Vol. 161, No. 4, 2011, ISSN 0024-4082 , pp. 872-915, doi : 10.1111 / j.1096-3642.2010.00665.x .