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| Ikechosaurus Temporal range: | |
|---|---|
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| Fossil specimen, Beijing Museum of Natural History | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | †Choristodera |
| Suborder: | †Neochoristodera |
| Genus: | †Ikechosaurus Sigogneau-Russell, 1981 |
| Type species | |
| †Ikechosaurus sunailinae Sigogneau-Russell, 1981[1] | |
| Other species | |
Ikechosaurus (meaning "Ikh Juu lizard", in reference to the discovery locality of type species[1]) is an extinct genus of choristodere reptile which existed in China and Mongolia during the Early Cretaceous.[3] It contains four species: I. sunailinae,[1] I. magnus,[4] I. gaoi,[3] and I. pijiagouensis.[5] It belongs to the crocodilian-like clade Neochoristodera and was initially assigned to the Champsosauridae by palaeontologist Denise Sigogneau-Russell in 1981.[1] Compared to other neochoristoderes, Ikechosaurus has a rather simple dentition, lacking the speciations seen in latter species. It also has parasphenoid palatal teeth, a feature not seen in any other choristodere.[6][7]
References
[edit]- 1 2 3 4 Sigogneau-Russell, D. (1981). "Présence d'un nouveau Champsosauridé dans le Crétacé supérieur de Chine". Comptes Rendus de l'Académie des Sciences de Paris (in French). 292 (1): 1–4.
- ↑ Efimov, M. B. (1979). Чойрия (Champsosauridae) из раннего мела Хамарин-Хурала, МНР [Tchoiria (Champsosauridae) from the Early Cretaceous of Khamaryn Khural, MNR]. Transactions of the Joint Soviet-Mongolian Palaeontological Expedition (in Russian). 8: 56–57.
- 1 2 Lü, J.-C.; Kobayashi, Y.; Li, Z.-G. (1999). "A new species of Ikechosaurus (Reptilia: Choristodera) from the Jiufutang Formation (Early Cretaceous) of Chifeng City, Inner Mongolia" (PDF). Bulletin de l'Institut royal des Sciences naturelles de Belgique. 69 (Supplément B): 37–47.
- ↑ Efimov, M. B. (1983). Хампсозавры Центральной Азии [Champsosaurids of Central Asia] (PDF). Transactions of the Joint Soviet-Mongolian Palaeontological Expedition (in Russian). 24: 67–75. Archived from the original (PDF) on 2023-05-25.
- ↑ Liu, J. (2004). "A nearly complete skeleton of Ikechosaurus pijiagouensis sp. nov. (Reptilia: Choristodera) from the Jiufotang Formation (Lower Cretaceous) of Liaoning, China" (PDF). Vertebrata PalAsiatica (in English and Chinese (China)). 42 (2): 120–129.
- ↑ Lü, J.; Zhu, Q.; Cheng, X.; Du, X. (1999). "Computed tomography (CT) of nasal cavity of Ikechosaurus sunailinae (Reptilia: Choristodera)". Chinese Science Bulletin. 44 (24): 2277–2281. Bibcode:1999ChSBu..44.2277L. doi:10.1007/BF02885939. S2CID 94574236.
- ↑ Matsumoto, R.; Evans, S. E. (2015). "Morphology and function of the palatal dentition in Choristodera". Journal of Anatomy. 228 (3): 414–429. doi:10.1111/joa.12414. PMC 5341546. PMID 26573112.
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