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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.

Taxonomy of the family Chelidae
Bibliography of the genus Platemys
Biodiversity of the family Chelidae


Twist-necked Turtle


Rødhovedet Halsvender

1830 Platemys Wagler (type species: Testudo platycephala Schneider 1792)

Contents: 1 species, which is not endemic.
Endemism: 0% 100%
Remarks: Previously included Acanthochelys.
Distribution: As for the single species.

Platemys platycephala

Twist-necked Turtle, Grooved Side-necked Turtle


Rødhovedet Halsvender

1792 Testudo platycephala Schneider
Testudo planiceps s. platycephala Schoepff 1801
Platemys platycephala Boulenger 1889
1801 Testudo planiceps Schoepff (Fritz & Havas 2006)
Emys planiceps Schweigger 1812
Hydraspis planiceps Bell 1828
Clemmys planiceps Ritgen 1828
Platemys planiceps Wagler 1830
Chelys planiceps Gray in Griffith 1831
1803 Testudo martinella Daudin (Fritz & Havas 2006)
Emys martirella [lapsus] Schinz 1833
Platemys martinella Duméril & Bibron 1835
1812 Emys discolor Thunberg in Schweigger (Fritz & Havas 2006)
Testudo dicolor [lapsus] Ekstrand 1823
Hydraspis discolor Fitzinger 1835
1824 Emys canaliculata Spix (Fritz & Havas 2006)
Hydraspis canaliculata Bell 1828
Platemys canaliculata Wagler 1833
1831 Emys constricta Gray in Griffith (Fritz & Havas 2006)
Hydraspis constricta Gray 1831
1984 Platemys platycephala melanonota Ernst

Other common names:
melanonota: Western Twist-necked Turtle, Black-backed Twist-necked Turtle
platycephala: Eastern Twist-necked Turtle, Common Twist-necked Turtle
Introduced to: USA (Florida).
Distribution: Bolivia, Brazil (Acre, Amapa, Amazonas, Maranhao, Mato Grosso, Para [incl. Marajo Island], Rondonia, Roraima), Colombia, Ecuador, French Guiana, Guyana, Peru, Surinam, Venezuela.

Platemys platycephala
© Rune Midtgaard