About Acanthochelys spixii (Duméril & Bibron, 1835)
Acanthochelys spixii, first described by Duméril & Bibron in 1835, is a species of turtle in the family Chelidae. It has several common names: black spine-neck swamp turtle, spiny-neck turtle, and Spix's sideneck turtle. This turtle species is endemic to South America, particularly the Southern Cone region. Its confirmed geographic range includes Argentina, Brazil, and Uruguay; it may also be present in Paraguay.