Biology:Hadongsuchus
| Hadongsuchus | |
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| Scientific classification | |
| Kingdom: | Animalia
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| Phylum: | |
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| Subclass: | Diapsida
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| Infraclass: | |
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| Infraorder: | |
| (unranked): | Shartegosuchoidea
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| Genus: | “Hadongsuchus” Young-nam and Hang-jae, 2005
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| Species | |
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The binomial name “Hadongsuchus acerdentis” refers to the skull remain of an extinct "protosuchian" crocodyliform from the Hasandong Formation of Hadong, South Korea .
Discovery
The Hasandong Formation has been dated to the late Aptian and earliest Albian, between 118.0 ± 2.6 Ma and 112.4 ± 1.3 Ma.[1] Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[2] Tracks of the pterosaur ichnogenus Pteraichnus have also been recovered from the unit.[3] A complete fossil skull was discovered in 2002, and the genus was named in 2005 on the basis of this holotype. Certain features of the third premaxillary tooth help distinguish it from other related crocodylomorphs. The estimated size of Hadongsuchus was around 50 cm in length. Like other protosuchians, it is believed to have been a fully terrestrial cursorial animal with a semi-erect posture. The binomial name of the type species H. acerdentis means "sharp-toothed crocodile from Hadong" in Greek.[4][5] The name is a nomen nudum, for the binomial name isn't approved officially but only stated in the symposium from China in 2005,[5] which means that the name doesn't match the conditions to be the binomial name that can be internationally approved according to the International Commission on Zoological Nomenclature.[6]
Systematics
Hadongsuchus was recovered as a close relative of Shantungosuchus, Sichuanosuchus, and Zosuchus by Hangjae et al. (2005).
References
- ↑ Lee, Tae-Ho; Park, Kye-Hun; Yi, Keewook (October 2018). "Nature and evolution of the Cretaceous basins in the eastern margin of Eurasia: A case study of the Gyeongsang Basin, SE Korea" (in en). Journal of Asian Earth Sciences 166: 19–31. doi:10.1016/j.jseaes.2018.07.004.
- ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ↑ Y.-N. Lee, H.-J. Lee, J. and Y. Kobayashi. 2008. New pterosaur tracks from the Hasandong Formation (Lower Cretaceous) of Hadong County, South Korea. Cretaceous Research 29:345-353.
- ↑ "Fossil Found in South Korea Indicate New Genus of Crocodile" YonhapNews 2005-03-28. Retrieved on 3 May 2009.
- ↑ 5.0 5.1 Y. Hangjae, Y. Yungnam, and Y. Hyesu. 2005. 경남 하동군 하산동층(전기 백악기)에서 산출된 악어 두개골의 골격학과 계통분류학적 연구 [A new protosuchian (Archosauria: Crocodyliformes) skull from the Hasandong Formation (Lower Cretaceous) of Hadong, Korea]. Korean Journal of Paleontology 21(1):146-150 (pdf at http://imgsvr.riss4u.net/contents3/td_contents8/09984/433/09984433.pdf)
- ↑ International Commission on Zoological Nomenclature. "Glossary". International Trust for Zoological Nomenclature. http://www.nhm.ac.uk/hosted-sites/iczn/code/index.jsp?booksection=glossary&nfv=true.
Wikidata ☰ Q5638023 entry
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