Chelus

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
Infraordo: Pan-Pleurodira
Subordo: Pleurodira
Superfamilia: Chelidoidea

Familia: Chelidae
Subfamilia: Chelinae
Genera: Chelus
Species: C. fimbriata – †C. colombianus – †C. lewisi – C. orinocensis
Name

Chelus Duméril 1805: 76
Synonymy

Chelus Duméril 1805:76
Chelys Oppel 1811:6 (nomen novum)
Chelyda Rafinesque 1815:75 (nomen novum)
Matamata Merrem 1820:21 (nomen novum)

References

Duméril, André Marie Constant. 1805 [“1806”]. Zoologie Analytique, ou Méthode Naturelle de Classification des Animaux. Paris: Perronneau, 344 pp. [Published Nov 1805].
TTWG (Turtle Taxonomy Working Group) 2021. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (9th Ed.). Chelonian Research Monographs 8:1–472. DOI: 10.3854/crm.8.checklist.atlas.v9.2021.Pdf
de Oliveira, G. O. and Romano, P. S. 2007. Histórico dos achados de tartarugas fósseis do Brasil. Arquivos do Museu Nacional, Rio de Janeiro 65(1):113-133.

Vernacular names
Deutsch: Fransenschildkröte
English: Mata Mata
日本語: マタマタ属
Nederlands: Matamata
polski: Matamata
português: Mata Mata
ไทย: เต่ามาตามาตา, เต่าใบไม้, เต่าก้อนหินยักษ์

Chelus is a genus of freshwater turtles found in South America.

Formerly considered to be a monotypic genus, it now consists of two species after Chelus orinocensis was identified in 2020 from a genomic analysis.[2]
Species

Chelus fimbriatus
Chelus orinocensis

References

Duméril, A.M.C. 1806. Zoologie Analytique, ou Méthode Naturelle de Classification des Animaux. Paris: Perronneau, 344 pp.
Sanchez-Vilaga, Marcelo R.; Prichard, Peter C. H.; Paolillo, Alfredo; Linares, Omar J. (January 1995). "Geographic variation in the matamata turtle, Chelus fimbriatus, with observations on its shell morphology and morphometry" (PDF). Chelonian Conservation and Biology. 1: 292–300.