Bairdemys hartsteini, new species

TYPE SPECIMEN: AMNH 27222, a nearly complete skull (figs. 12–15). Collected by Eugene F. Hartstein, 1975 .

TYPE LOCALITY: North side of Highway No. 2, west of Bayamon, Puerto Rico. See MacPhee and Wyss (1990: 37) for a more detailed description of this site .

TYPE HORIZON: Cibao Formation, middle Miocene. Nearby locality has manatee ribs, turtle shell, shark teeth, porpoise vertebrae (fide E. Hartstein, personal commun.). See MacPhee and Wyss (1990) for discussion of the Cibao Formation, its dating, and a general context of Puerto Rican Tertiary vertebrates .

DIAGNOSIS: A species of Bairdemys differing from the only other species, Bairdemys venezuelensis, by having a pinched rather

TABLE 2 Measurements of the Skulls of Bairdemys (in mm)

than straight snout, a premaxillary notch, a relatively narrower skull, a less pronounced depression on palatine surface of palate, and a relatively smaller skull (see tables 1, 2).

ETYMOLOGY: For Eugene F. Hartstein, who collected the specimen and donated it to the AMNH in 1991.