TY - BOOK TI - Caninemys, a new side-necked turtle (Pelomedusoides, Podocnemididae) from the Miocene of Brazil VL - no. 3639 UR - https://www.biodiversitylibrary.org/item/280436 PB - American Museum of Natural History CY - New York, NY PY - 2009 N1 - Caption title. --- "March 31, 2009." --- A new genus and species of podocnemidid pleurodire, Caninemys tridentata, is described on the basis of a skull collected by L.I. Price in 1962 from the late Miocene of Acre, Brazil. It is unique among podocnemidids (and all other turtles) in having greatly inflated maxillae, each with a ventral, toothlike process. Along with a midline process of the premaxillae, these processes form a tridentate condition in the upper triturating surface, also unique among podocnemidids but comparable to the condition in the kinosternid Claudius. This skull has previously been identified as the shell-based genus Stupendemys, but there are no associations supporting this assignment. The type specimens are separated by over 2000 km, and other large podocnemidid taxa are known from this time and region. Although relatively large with a condylobasal skull length of about 17 cm, Caninemys was probably about half the size of Stupendemys. Phylogenetic analysis of 63 skeletal characters provides evidence that this new taxon nests within the family Podocnemididae as follows: (Bauruemys (2Roxochelys3 (Podocnemis (Caninemys (Dacquemys ((Erymnochelys, Peltocephalus) (Neochelys (Shweboemys, Stereogenys)))))))). AU - Meylan, Peter A. (Peter Andre) AU - Gaffney, Eugene S. AU - Campos, DiĆ³genes de Almeida, KW - Acre Region KW - Anatomy KW - Brazil KW - Caninemys KW - Caninemys tridentata KW - Maxilla KW - Miocene KW - Paleontology KW - Phylogeny KW - Podocnemididae KW - Reptiles, Fossil KW - Skull KW - Turtles KW - Turtles, Fossil ER -