EMYSystem Species Page: Acanthochelys spixii
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OrderOrder Testudines (turtles, tortoises and terrapins)
FamilyFamily Chelidae (Austro-American Side-necked Turtles)
SubfamilySubfamily Austrochelidinae ()
GenusGenus Acanthochelys (South American Side-necked Swamp Turtles)
SpeciesSpecies Acanthochelys spixii (Spiny-neck Turtle)
range of species Acanthochelys spixii
approximate range
Original Description Duméril and Bibron 1835 : 409
Type Locality "Brésil"; restricted to "Rio São Francisco, near Rio dos Pandeiros, Minas Gerais, Brazil" by Rhodin, da Rocha e Silva, and Mittermeier (1984b:783)
Holotype Originally MNHN 8751; but ZSM 3003/0 designated lectotype by Hoogmoed and Gruber 1983:345; see Comment.
Original name Platemys spixii
Common name Spiny-neck Turtle
Distribution Upper Rio São Francisco and coastal basins in São Paulo state southward to Rio Paraná basin in Argentina, Uruguay, and southern Brazil; probably also occurs in Paraguay; introduced near Mendoza, Argentina
Comments This taxon was originally described as Emys depressa by Spix (1824:5), but that name had already been used by Merrem (1820:22) to describe material now referable to Phrynops geoffroanus. Duméril and Bibron (1835:409) provided the first unique name for this taxon (Platemys Spixii) based on MNHN 8751. However, because the latter is only a replacement name for Emys depressa Spix, the type material of the latter become the types of Platemys Spixii (e.g., see Rhodin, da Rocha e Silva, and Mittermeier, 1984). Hoogmoed and Gruber (1983:345) examined the only remaining syntype of E. depressa Spix (ZSM 3003/0) and designated it as the lectotype of that taxon, and by convention, of P. spixii as well. Reviewed by Groombridge (1982; as Platemys spixii), Ernst (1983b; as Platemys spixii; although his distribution map is in error), Rhodin, Mittermeier, and McMorris (1984; as Platemys spixii), Rhodin, da Rocha e Silva, and Mittermeier (1984; as Platemys spixii), Waller (1988), and Buskirk (1991).
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