Santana raptor
| Santana raptor | ||||||||||||
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Skeleton reconstruction of Santanaraptor placidus |
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| Temporal occurrence | ||||||||||||
| Lower Cretaceous ( Albium ) | ||||||||||||
| 112.9 to 100.5 million years | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Santana raptor | ||||||||||||
| Waiter , 1999 | ||||||||||||
| Art | ||||||||||||
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Santanaraptor is a genus of relatively small theropod dinosaur . Fossils of this carnivore come from the Lower Cretaceous Brazil and were described by the paleontologist Alexander Kellner in 1999. The only species is Santanaraptor placidus .
features
Santanaraptor , like all theropods, moved on two legs and was about 1.3 meters long. It can be distinguished from other theropods by features in the femur and fibula; for example, the cranial trochanter of the femur showed an opening at its base.
Find and naming
So far, only a single fragmented skeleton is known which of seat legs is (ischium), the hind limbs, tail vertebrae and some other, undetermined bones. This skeleton comes from the Romualdo layer member of the Santana Formation in northeastern Brazil and can be dated to the Albium (approx. 113 to 100 million years ago). Remnants of mineralized tissue were found in connection with the skeleton, showing, among other things, muscle fibers.
Santana raptor is named after the place where it was found, the Santana Formation . Santana is the short form of Saint Anna ( Santa Ana in Portuguese ). The ending raptor comes from Latin and means something like "thief". The Artepitheth placidus honors Placido Cidada Nuvens, who helped secure the site.
Systematics
The relationship of this genus is controversial. Kellner (1999) described Santanaraptor as a representative of the Coelurosauria that cannot be further classified . While Thomas Holtz (2004) regards Santanaraptor as a representative of the Tyrannosauroidea , Martínez and Novas (2006) consider a position within the Maniraptoriformes to be more likely.
Individual evidence
- ^ Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ 2010, ISBN 978-0-691-13720-9 , p. 99, online .
- ↑ a b Alexander WA Kellner: Short note on a new dinosaur (Theropoda, Coelurosauria) from the Santana Formation (Romualdo Member, Albian), northeastern Brazil. In: Boletim do Museu Nacional. Geologia. Nova Série Vol. 49, 1999, ISSN 0080-3200 , pp. 1-8.
- ↑ Thomas R. Holtz Jr .: Supplementary Information. To: Thomas R. Holtz Jr .: Dinosaurs. The most complete, up-to-date Encyclopedia for Dinosaur Lovers of all Ages. Random House, New York NY 2007, ISBN 978-0-375-82419-7 , online (PDF; 184.08 kB) .
- ↑ a b c Thomas R. Holtz Jr .: Tyrannosauroidea. 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. 111-136.
- ^ Ruben D. Martínez, Fernando E. Novas : Aniksosaurus darwini gen. Et sp. nov., a new coelurosaurian theropod from the early Late Cretaceous of central Patagonia, Argentina. In: Revista del Museo Argentino de Ciencias Naturales. Nuevo Series Vol. 8, No. 2, 2006, ISSN 1514-5158 , pp. 243-259, digitized version (PDF; 1.34 MB) ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and not yet tested. Please check the original and archive link according to the instructions and then remove this notice. .
