North American Recent Soft-Shelled Turtles (Family Trionychidae)

by Robert G. Webb

1933. Notes on recent reptiles and amphibians. Proc. Zool. Soc. London, 1933, pp. 735-851, 1 fig., 1 map, September 20.

Force, E. R.

1930. The amphibians and reptiles of Tulsa County, Oklahoma, and vicinity. Copeia, 1930(2):25-39, June 30.

Fowler, H. W.

1907. The amphibians and reptiles of New Jersey. Ann. Rep't. New Jersey St. Museum, 1906, 2:23-250.

Funkhouser, W. D.

1925. Wild life in Kentucky. Kentucky Geol. Surv., 16(ser. 6):xiv + 385, 89 figs., frontispiece.

Gadow, H.

1909. Amphibia and reptiles. Macmillan and Co., Ltd., London, xiii + 668 pp., 181 figs.

Gage, S. H.