Ikechosaurus

Ikechosaurus; Temporal range: Valanginian–Aptian PreꞒ Ꞓ O S D C P T J K Pg N
	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
Other species
	†I. magnus; (Efimov, 1979) [Formerly belong to Tchoiria]; †I.. gaoi; Lü, Kobayashi & Li, 1999; †I. pijiagouensis; Liu, 2004;

Ikechosaurus (meaning "Ikh Juu lizard", in reference to the discovery locality of type species) is an extinct genus of choristodere reptile which existed in China and Mongolia during the Early Cretaceous. It contains four species: I. sunailinae, I. magnus, I. gaoi, and I. pijiagouensis. It belongs to the crocodilian-like clade Neochoristodera and was initially assigned to the Champsosauridae by palaeontologist Denise Sigogneau-Russell in 1981. 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.

References

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.

This article about a prehistoric reptile is a stub. You can help Wikipedia by adding missing information.

[Russell1981-1] 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.

[Efimov1979-2] 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.

[Lu1999-3] 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.

[Efimov1983-4] 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.

[Liu2004-5] 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.

[Lu1999-2-6] 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.

[Matsumoto2015-7] 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.