Sliders are aquatic turtles. The two species referenced here were long considered as a single species, Trachemys scripta, but the populations of the Rio Grande and Conchas drainages in New Mexico, western Texas, and northern Chihuahua have been raised to specific status as T. gaigeae.
Synonyms. Trachemys gaigeae was earlier considered a subspecies of T. scripta. An earlier name for T. scripta is Pseudemys scripta.
Fig. 1. Trachemys gaigeae from Sierra Co., NM. Photograph by Carl S. Lieb.
Trachemys from Salt Creek likely are T. gaigeae, but cannot be distinguished from T. scripta on the material available. Harris (1993c) reported the taxon from the vicinity of La Union as Irvingtonian, but Vanderhill (1986) placed it in his Faunule B, which Morgan and Lucas (2003) have shown fits best as late Blancan (La Union).
Fig. 2. Costal plate of Trachemys from Salt Creek (UTEP 34.13).
Late Blancan: La Union (Vanderhill 1986).
Late Wisconsin: Salt Creek (UTEP).
Literature. Harris 1993c; Morgan and Lucas 2003; Vanderhill 1986.
Last Update: 4 Mar 2013