Itemir [1] ( lat. Itemirus ) is a genus of dinosaurs from the dromaeosaurid family that lived during the Upper Cretaceous era ( 93.5–86.3 million years ago) on the territory of modern Uzbekistan [2] .
| † Itemir |
Back of the skull |
| Scientific classification |
|---|
| No rank : | Bilateral symmetrical |
| Infraclass : | Archosauromorphs |
| No rank : | Archosauriformes |
| Group : | † Maniraptoriformes |
| Subfamily : | † Dromeosaurus |
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| International scientific name |
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Itemirus Kurzanov, 1976 |
| Single view |
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† Itemirus medullaris
Kurzanov, 1976 |
Geochronology93.5—86.3 Ma | million years | Period | Era | Aeon |
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| 2,588 | Even | | | Ka | F
but
n
e
R
about
s
about
th | | 23.03 | Neogene | | 66.0 | Paleogen | | 145.5 | a piece of chalk | M
e
s
about
s
about
th | | 199.6 | Yura | | 251 | Triassic | | 299 | Permian | P
but
l
e
about
s
about
th | | 359.2 | Carbon | | 416 | Devonian | | 443.7 | Silur | | 488.3 | Ordovician | | 542 | Cambrian | | 4570 | Precambrian |
◄ Nowadays◄ Cretaceous-Paleogene extinction◄ Triassic extinction◄ Mass Permian Extinction◄ Devonian extinction◄ Ordovician-Silurian extinction◄ Cambrian explosion |
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Itemira was described by Sergey Kurzanov in 1976 by the only small damaged skull found in 1958 in the area of Itemir village, on the Dzharakuduk slope, in the layers of the Bissecta formation - holotype PIN 327/699. The name of the genus is given in honor of the village of Itemir. The species name medullaris is given by the Latin name medulla oblongata , an medulla oblongata , partially enclosed in a skull box [3] .
Kurzanov noted the anatomical resemblance to tyrannosaurids and dromaeosaurids and assigned the genus Itemirus to his own family Itemiridae . In 2004, Thomas Goltz suggested that itemir was a representative of the Tyrannosauroidea superfamily [4] . In 2009, Nicholas Longreach and Philip Curry included itemira in a cladistic analysis of the internal relations of dromaeosaurids and found that it should be assigned to the Velociratporin subfamily [5] . In 2014, during the analysis of additional material, it was found that Itemirus can be placed in phylogenesis in the dromaeosaurid family [6] .
| Eudromaeosauria |
| Bambiraptor |
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| Saurornitholestes |
| | Velociraptorinae | |
| | Dromaeosaurinae |
| Tsaagan |
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| Dromaeosaurus |
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| Atrociraptor |
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| Utahraptor |
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| Achillobator |
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| Itemirus |
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- ↑ Kurochkin E.N. , Lopatin A.V. Fossil vertebrates of Russia and neighboring countries. Fossil reptiles and birds. Part 2 / Lopatin A.V. - M .: Geos, 2012 .-- T. 2 .-- S. 211-212. - 419 (154 fig., 26 phototables) s. - ISBN 978-5-89118-594-4 .
- ↑ Itemirus (English) information on the Paleobiology Database website. (Retrieved December 21, 2017) .
- ↑ Kurzanov SM Braincase structure in the carnosaur Itemirus n. gen. and some aspects of the cranial anatomy of dinosaurs (English) // Paleontological Journal. - 1976. - Vol. 10 . - P. 361-369 .
- ↑ Holtz TR The Dinosauria (second edition) / DB Weishampel, P. Dodson, H. Osmolska. - Berkeley: University of California Press, 2004 .-- P. 111-136.
- ↑ Longrich NR and Currie PJ A microraptorine (Dinosauria – Dromaeosauridae) from the Late Cretaceous of North America // Proceedings of the National Academy of Sciences. - 2009. - Vol. 106 , no. 13 . - P. 5002-5007 . - DOI : 10.1073 / pnas.0811664106 .
- ↑ Sues H.-D., Averianov A. Dromaeosauridae (Dinosauria: Theropoda) from the Bissekty Formation (Upper Cretaceous: Turonian) of Uzbekistan and the phylogenetic position of Itemirus medullaris Kurzanov, 1976 // Cretaceous Research. - 2014 .-- No. 51 . - P. 225-240 . - DOI : 10.1016 / j.cretres.2014.06.06.007 .
