Bairdemys sanchezi Gaffney et al., 2008

Gaffney, Eugene S., Meylan, Peter A., Wood, Roger C., Simons, Elwyn & De Almeida Campos, Diogenes, 2011, Evolution Of The Side-Necked Turtles: The Family Podocnemididae, Bulletin of the American Museum of Natural History 2011 (350), pp. 1-237 : 53-54

publication ID	https://doi.org/ 10.1206/350.1
DOI	https://doi.org/10.5281/zenodo.12778528
persistent identifier	https://treatment.plazi.org/id/C95DDC2B-FFB0-5E46-FD02-A2A19EBBD799
treatment provided by	Felipe
scientific name	Bairdemys sanchezi Gaffney et al., 2008
status

Treatment

TYPE SPECIMEN: Skull, jaws, and anterior plastral fragment ( Gaffney et al., 2008). AMU-CURS 186; collector: Orangel Aguilera, Alcaldía del Municipio Urumaco, Colección Rodolfo Sánchez.

TYPE LOCALITY: Tío Gregorio, Falcón State, Venezuela (Aguilera, 2004). Locality coordinates: 11 ° 14 9 43 0 N, 70 ° 18 9 19 0 W. The Tío Gregorio locality represents the top of the upper member in the Urumaco Formation, and may be on the same stratigraphic level as the MCZ quarry in Tío Gregorio.

HORIZON: Upper Member of the Urumaco Formation.

DIAGNOSIS: A species of Bairdemys differing from all other Bairdemys species in having a low triturating surface convexity and shallow triturating surface concavity, a smaller basisphenoid acutely pointed anteriorly, a small skull, and an extensive cheek and temporal emargination; also differs from B. hartsteini in having a convex rather than straight labial ridge in ventral view; also differs from B. venezuelensis in having a long midline pterygoid contact and a premaxillary notch, and also differs from B. winklerae in having a short, broad snout with a convex labial ridge in ventral view, a premaxillary notch, and a triturating surface that is narrower anteriorly and wider posteriorly.

REFERRED MATERIAL: None.

PREVIOUS WORK: Gaffney et al. (2008).

DISCUSSION: This specimen is described and figured in Gaffney et al. (2008). The small size, flatter triturating surface, and extensive temporal and cheek emargination provide ready distinction of this species from the other species of Bairdemys . The shell fragment consists of the entoplastron and most of both epiplastra. The scale pattern is very similar to that of Bairdemys venezuelensis figured in Gaffney et al. (2006: fig. 275).