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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
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Natricinae
Genus: Atretium
Species (2): A. schistosum – A. yunnanensis
Name

Atretium Cope, 1861: 299 [replacement name]

Type species: Coluber schistosum Daudin, 1803, by monotypy.
Synonyms

Tropidophis Gray, 1849 [preoccupied by Tropidophis Bibron, 1843]

References
Primary references

Cope, E.D. 1861. Contributions to the Ophiology of Lower California, Mexico and Central America. Proceedings of the Academy of Natural Sciences of Philadelphia 13: 292–306. BHL Reference page.

Links

Uetz, P. & Hallermann, J. 2021. Atretium . The Reptile Database. Accessed on 25 May 2018.

Vernacular names
English: Olive Keelbacks

Atretium is a genus of snakes of the family Colubridae.
Species

Atretium schistosum (Daudin, 1803)
Atretium yunnanensis Anderson, 1879

References

Genus Atretium at The Reptile Database

Biology Encyclopedia

Reptiles Images

Retrieved from "http://en.wikipedia.org/"
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