PaleoDB taxon number: 366267
Alternative combination: Chrysemys williamsi
Full reference: F. L. Rose and W. G. Weaver. 1966. Two new species of Chrysemys (= Pseudemys) from the Florida Pliocene. Tulane Studies in Geology and Paleontology 5(1):41-48
Sister taxa: Pseudemys alabamensis, Pseudemys carri, Pseudemys concinna, Pseudemys floridana, Pseudemys gorzugi, Pseudemys idahoensis, Pseudemys nelsoni, Pseudemys peninsularis, Pseudemys rubriventris, Pseudemys texana
Type specimen: UF 11561, a shell. Its type locality is McGehee Farm, which is in a Hemphillian terrestrial horizon in the Alachua Formation of Florida.