Indosaurus
| Indosaurus | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||||||
| Upper Cretaceous ( Maastrichtian ) | ||||||||||||
| 72 to 66 million years | ||||||||||||
| Locations | ||||||||||||
| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Indosaurus | ||||||||||||
| Huene & Matley , 1933 | ||||||||||||
| Art | ||||||||||||
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Indosaurus ("Indian lizard") is a little known genus of theropod dinosaur from the group of Abelisauridae . It is based on a fragmentary brain skull that comes from the Indian Lameta Formation and is dated to the Upper Cretaceous ( Maastrichtian ). That brain skull is lost today.
The brain skull comes from Bara Simla , a hill in Madhya Pradesh in central India , and was described by Friedrich von Huene and Charles Matley in 1933 . Numerous further remains of theropods were found from the same site; however, these finds always represent individual bones, and connected (articulated) skeletal parts have rarely been found. For this reason, it is still controversial today how many different theropod species actually exist. Up to 1934, eleven different genera of theropods were named from Basa Simla, whereby the majority of these genera are probably identical to each other.
Von Huene and Matley (1933) attributed two further brain skulls, which are also lost today, to a different genus: Indosuchus . Like Indosaurus, Indosuchus is assigned to the Abelisauridae, a group of Ceratosauria . The two genera can be distinguished by the construction of the skullcap, which is more robust in Indosaurus . Nonetheless, Novas and colleagues (2004) note that all three brain skulls were in a poor state of preservation and that Indosaurus and Indosuchus may be synonyms (are identical). Carrano and Sampson (2008) suggest, however, that Indosaurus could possibly be identical with Lametasaurus and / or Rajasaurus , and that Indosuchus can be most easily distinguished from other genera.
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 , pp. 78–79, online ( memento of the original from July 13, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. .
- ^ A b c 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, here p. 202, doi : 10.1017 / S1477201907002246 .
- ↑ Friedrich Baron von Huene , Charles Alfred Matley: The Cretaceous Saurischia and Ornithischia of the Central Provinces of India (= Geological Survey of India. Palaeontologia Indica. NS Vol. 21, No. 1, ISSN 0970-0528 ). Manager of Publication, Delhi 1933.
- ↑ Fernando E. Novas , Federico L. Agnolin, Saswati Bandyopadhyay: Cretaceous theropods from India: A review of specimens described by Huene and Matley (1933). In: Revista del Museo Argentino de Ciencias Naturales. NS Vol. 6, No. 1, 2004, ISSN 1514-5158 , pp. 67-103, digitized version (PDF; 78.62 kB) ( Memento of the original from October 7, 2012 in the Internet Archive ) Info: The archive link was automatically used and not yet tested. Please check the original and archive link according to the instructions and then remove this notice. .
