North American Recent Soft-Shelled Turtles (Family Trionychidae)

by Robert G. Webb

Goldsmith, W. M.

1945. Notes on the egg laying habits of the softshell turtles. Proc. Iowa Acad. Sci., 1944, 51:447-49, December.

Gray, J. E.

1844. Catalogue of the tortoises, crocodiles, and amphisbaenians in the collection of the British Museum. London, viii + 80 pp.

1855. Catalogue of shield reptiles in the collection of the British Museum. Part I. Testudinata (Tortoises). London, 79 pp., 42 pls.

1864. Revision of the species of Trionychidae found in Asia and Africa, with descriptions of some new species. Proc. Zool. Soc. London, 1864, pp. 76-98, 21 figs., February 23.

1869. Notes on the families and genera of tortoises (Testudinata) and on the characters afforded by the study of their skulls. Proc. Zool. Soc. London, 1869, pp. 165-225, 20 figs., 1 pl., March 11.

1870. Supplement to the catalogue of shield reptiles in the collection of the British Museum. Part I. Testudinata (Tortoises). With figures of skulls of 36 genera. London, 120 pp., 40 figs.

Green, N. B.