Piatnitzkysaurus
| Piatnitzkysaurus | ||||||||||||
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Reconstruction of the skull of Piatnitzkysaurus |
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| Temporal occurrence | ||||||||||||
| Middle Jurassic ( Callovium ) | ||||||||||||
| 166.1 to 163.5 million years | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Piatnitzkysaurus | ||||||||||||
| Bonaparte , 1979 | ||||||||||||
| Art | ||||||||||||
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Piatnitzkysaurus is a genus of theropod dinosaur from the Central Jurassic ( Callovium ) of South America.
So far, parts of two partially preserved skulls with associated skeletal parts have been found in the Cañadón-Asfalto formation in the Argentine province of Chubut . Paleontologists are still debating how to classify it. Anatomically it seems to be close to Allosaurus , even if the base of the skull shows differences.
Was named piatnitzkysaurus by Alejandro Piatnitzky and Miguel Flores, two Argentine geologists. A replica of the skeleton of this theropod is on display in the Natural Science Museum Museo Argentino de Ciencias Naturales Bernardino Rivadavia in Buenos Aires .
features
The 4.3-meter-long bipedan was built very much like Allosaurus , but his arms were longer and unusually strong. The weight of Piatnitzkysaurus is estimated at 275 kg. The meat eater's sturdy head was about 50 cm long with long, conical teeth. Two bone ridges ran from the eyes to the tip of the snout. He had long claws on his fingers. The stocky body ended in a stiff tail.
literature
- Thomas R. Holtz Jr. , Ralph E. Molnar, Philip J. Currie : Basal Tetanurae. 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. 71-110.
Individual evidence
- ^ Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ 2010, ISBN 978-0-691-13720-9 , p. 89, online .
- ↑ Etymology at www.latec.ufrj.br (Portuguese, accessed October 17, 2009)
- ↑ Description at www.thescelosaurus.com ( Memento of the original from June 27, 2009 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. (accessed July 29, 2009)
- ↑ www.argentinaonview.com: Prehistoric Argentina, the dinosaurs' land - Piatnitzkysaurus floresi ( Memento from January 6, 2009 in the Internet Archive )
Web links
- Piatnitzkysaurus at Natural History Museum (accessed December 10, 2009)