North American Recent Soft-Shelled Turtles (Family Trionychidae)

by Robert G. Webb

1959. Description of a new softshell turtle from the southeastern United States. Univ. Kansas Publ. Mus. Nat. Hist., 11(9):517-25, 1 fig., 2 pls., August 14.

1960. Type and type locality of the Gulf Coast spiny softshell turtle, Trionyx spinifer asper (Agassiz). Breviora, No. 129:1-8, 2 pls., December 21.

Webb, R. G., and Legler, J. M.

1960. A new softshell turtle (genus Trionyx) from Coahuila, Mexico. Univ. Kansas Sci. Bull., 40(2):21-30, 2 pls., April 20.

Webster, E. B.

1936. A preliminary list of the reptiles and amphibians of Pottawatomie County, Oklahoma, near Shawnee. Proc. Oklahoma Acad. Sci., 1935, 16:20-22.

Weed, A. C.

1923. Notes on reptiles and batrachians of central Illinois. Copeia, 1923(116):47-50, March 15.

Welter, W. A., and Carr, K.