Opothleyahola

Hydromedusa is a turtle genus in the family Chelidae, commonly known as the South American snake-necked turtles. They are quite closely related to the South American side-necked swamp turtles (Acanthochelys) and the snake-necked turtles of the Australian-Melanesian region (Chelodina), but less closely to the spine-necked river turtles of South America (Podocnemididae) which belong to a more modern lineage of Pleurodira.

Species

This genus contains the following extant^[1] and fossil species:

Brazilian snake-necked turtle, Cágado da Serra, Hydromedusa maximiliani
Argentine snake-necked turtle, Cágado pescoço de cobra, Hydromedusa tectifera
Hydromedusa casamayorensis De la Fuente & Bona 2002, Salamanca and Sarmiento Formations, Argentina

References

^ Gaffney, E. S. (May 10, 1977). "The side-necked turtle family Chelidae : a theory of relationships using shared derived characters. American Museum novitates ; no. 2620". Novitates. 2620. S2CID 73704639.

Molina, F. J., & Leynaud, G. C. (2017). Thermoconformity strategy in the freshwater turtle Hydromedusa tectifera (Testudines, Chelidae) in its southern distribution area. Journal of Thermal Biology, 69, 178–183. https://doi.org/10.1016/j.jtherbio.2017.07.008

[1] Gaffney, E. S. (May 10, 1977). "The side-necked turtle family Chelidae : a theory of relationships using shared derived characters. American Museum novitates ; no. 2620". Novitates. 2620. S2CID 73704639.

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