Soft-shelled Tortoise (Testudo naso cylindracea elongato, truncato: Morse, Jedidiah. 1794. The American Geography of, a view of the Present Situation of the United State of America. John Stockdale, Piccadilly, London. pp.); Fierce Tortoise (Testudo ferox: Shaw, George. 1802. General zoology or systematic natural history. Volume 3. G. Kearsley, London, U. K.. 615pp.); Fierce Tortoise (Testudo ferox: James, Edwin. 1823. Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819, 1820. By order of the Hon. J. C. Calhoun, Secretary of War, under the command of Maj. S. H. Long, of the United States Top. Engineers. Compiled from the notes of Major Long, Mr. T. Say, and other gentlemen of the party by Edwin James, botanist and geologist to the expedition. In three volumes. [Volume 1]. Longman, Hurst, Rees, Orme and Brown, London, England. 344pp.); Fierce Trionyx (Trionyx ferox: Gray, John E. 1830. A synopsis of the species of the class reptilia. Pages 1-110 in The Animal Kingdom Arranged in Conformity with its Organization by the Baron Cuvier, member of teh Institute of France, with Additional Descriptions of all the Species Hitherto Named, and of many not before noticed. Ninth Volume. Whittaker, Treacher, and Company, London, England. pp.); Fierce Tortoise (Trionyx ferox: Griffith, Edward and Edward Pidgeon. 1831. The class reptilia arranged by the Baron Cuvier, with specific descriptions. Part 2. Whittaker, Treacher, and Company, London. 1-481pp.); Fierce Trionyx (Trionyx ferox: Gray, John E. 1856. Catalogue of shield reptiles in the collection of the British Museum. Part I. Testudinata (Tortoises). Taylor and Francis, London, England. 79pp.); Fierce Tortoise (Trionyx ferox: Royal College of Surgeons of England. 1859. Descriptive catalogue of the specimens of natural history in spirit contained in the Museum of the Royal college of surgeons of England. Vertebrata: Pisces, Reptilia, Aves, Mammalia. Taylor and Francis, London, England. pp.); Soft-shelled Snapper (Aspidonectes ferox: Coues, Elliott and Henry C. Yarrow. 1878. Notes on the natural history of Fort Macon, N. C. and Vicinity (No. 4). Proceedings of the Academy of Natural Sciences, Philadelphia 30():21-28); Soft-shelled Turtle (Aspidonectes ferox: Davis, N. S. Jr. and Frank L. Rice. 1883. Descriptive catalogue of North American batrachia and reptilia, found east of Mississippi River. Illinois Natural History Survey Bulletin 1(5):71); Soft-shelled Turtle (Trionyx ferox: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Southern Soft-shelled Turtle (Trionyx ferox ferox: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);