Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Cladus: Archelosauria
Division: Pan-Testudines
Division: Testudinata
Ordo: Testudines
Subordo: Cryptodira
Superfamily: Macrobaenoidea
Familia: †Sinemydidae
Genus: Manchurochelys
Species: M. manchoukuoensis
Manchurochelys is an extinct genus of turtle in the order Paracryptodira. It existed during the early Cretaceous of what is now northeast China.[1] It has been found in the Jianshangou Bed of West Liaoning's Yixian Formation.[2] However, it is a rarely found fossil.[3]
Skull and neck
Manchurochelys was first named by Endo and Shikama in 1942, and contains the single species, M. manchoukuoensis (sometimes misspelled M. manchouensis). A second species, M. liaoxensis, was named in 1995 but was later shown to be a species of Ordosemys.[4] Manchurochelys was a relative of the modern-day snapping turtle.[5] It has been occasionally placed in the family Sinemydidae, although it is said to more likely belong in the family Macrobaenidae.[6]
References
Chinese Fossil Vertebrates by Spencer G. Lucas. Retrieved on 2008-08-24.
Jianshangou Bed of the Yixian Formation in West Liaoning, China; Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 2004-02-06. Retrieved on 2008-08-25.
"Fossils Seized". NewScientistTech. 2004-06-26. Retrieved 2008-08-26.
Tong, H., Ji, S. and Ji, Q. (2004). "Ordosemys (Testudines, Cryptodira) from the Yixian Formation of Liaoning Province, northeastern China: new specimens and systematic revision." American Museum Novitates, 3438: 1-20.
Dinosaurs: Photo Captions by the American Museum of Natural History. "Archived copy" (PDF). Archived from the original (PDF) on 2007-10-28. Retrieved 2008-08-26.
Fossil Turtle Newsletter. Retrieved on 2008-08-26.
Further reading
The Age of Dinosaurs in Russia and Mongolia by Michael J. Benton, Mikhail A. Shishkin, David M. Unwin, and Evgenii N. Kurochkin
The Osteology of the Reptiles by Alfred Sherwood Romer
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