Noasauridae
| Noasauridae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Skull of Masiakasaurus knopfleri on display at the Field Museum of Natural History in Chicago |
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| Temporal occurrence | ||||||||||||
| Chalk ( Albium to early Maastrichtian ) | ||||||||||||
| 112.9 to 69.9 million years | ||||||||||||
| Locations | ||||||||||||
| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Noasauridae | ||||||||||||
| Bonaparte & Powell, 1980 |
The Noasauridae are a family of theropod dinosaurs (Theropoda). Within the theropods they are counted among the Abelisauroidea , a group of the Ceratosauria .
Noasaurids were predominantly small to medium-sized theropods. They first appeared in the late Lower Cretaceous ( Albian ) and died out shortly before the Cretaceous-Tertiary mass extinction at the end of the Upper Cretaceous (early Maastrichtian ). Name- giving genus is Noasaurus from the Upper Cretaceous Argentina , which is known only from fragmentary remains. The so far most complete noasaurid is Masiakasaurus from the Upper Cretaceous Madagascar , whose skeleton is 65% known.
Systematics
It is disputed which genres belong to this group. For a long time only the genera Noasaurus and Ligabueino were assigned to it. At the beginning of the 21st century, the genera Masiakasaurus , Velocisaurus and Laevisuchus were recognized as possible further representatives of the Noasauridae. An extensive cladistic analysis by Carrano and Sampson (2008) assigns the genera Noasaurus , Masiakasaurus , Velocisaurus , Laevisuchus and Genusaurus to the Noasauridae , but excludes Ligabueino . Other, but little-known genera that may be attributed to the Noasauridae include Compsosuchus , Jubbulpuria and Ornithomimoides ? barasimlensis .
The Noasauridae is regarded as a sister taxon of the Abelisauridae ; both groups are summarized as Abelisauroidea . Wilson and colleagues (2003) define the Noasauridae as a stem-based definition , which includes all genera that are more closely related to Noasaurus leali than to Carnotaurus sastrei . A more recent synonym for the taxon is the name Velocisauridae, which was introduced by Bonaparte in 1991.
features
The Noasauridae were rather small in comparison to the Abelisauridae, the largest species reached a length of about 2-3 meters. In contrast to other groups, the second metartasal (metatarsal bone) was very small.
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. 82, online .
- ↑ a b c d Matthew T. Carrano, Scott D. Sampson: The Phylogeny of Ceratosauria (Dinosauria: Theropoda). In: Journal of Systematic Palaeontology. Vol. 6, No. 2, 2008, ISSN 1477-2019 , pp. 183-236, doi : 10.1017 / S1477201907002246 .
- ↑ Don Lessem : Jose Bonaparte: Master of the Mesozoic. In: Omni. Vol. 15, No. 7, May 1993, ISSN 0149-8711 , pp. 52-58.
- ↑ Matthew T. Carrano, Mark A. Loewen, Joseph JW Sertich: New materials of Masiakasaurus knopfleri Sampson, Carrano, and Forster, 2001, and implications for the morphology of the Noasauridae (Theropoda: Ceratosauria) (= Smithsonian Contributions to Paleobiology. No. . 95, ISSN 0081-0266 ). Smithsonian Institution Scholarly Press, Washington DC 2011, p. 53, online .
- ↑ Ronald S. Tykoski, Timothy Rowe : Ceratosauria. 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. 47-70.
- ↑ Taxon Search - Noasauridae ( Memento of the original from October 6, 2007 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. . Scientific database by Paul Sereno
- ↑ Noasauridae on The Theropod Database ( Memento from February 3, 2009 in the Internet Archive )
