02211cam a22003133u 4500 40005 UtSlPG 20260610133921.0 m cr n 260607r2012||||utu|||||o|||||||||||||| d 62063091 UtSlPG en iso639-1 QH Webb, Robert G. (Robert Gravem), 1927-2018 North American Recent Soft-Shelled Turtles (Family Trionychidae) Salt Lake City, UT : Project Gutenberg, 2012 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier Release date is 2012-06-16 Produced by Chris Curnow, Tom Cosmas, Joseph Cooper, page images courtesy of The Internet Archive and the Online Distributed Proofreading Team at http://www.pgdp.net "North American Recent Soft-Shelled Turtles (Family Trionychidae)" by Robert G. Webb is a scientific publication written in the early 1960s. This work provides a comprehensive examination of the genus "Trionyx", which includes various species and subspecies of soft-shelled turtles found in North America. The book delves into their taxonomy, natural history, collecting methods, and evolutionary relationships, aimed at professional biologists and herpetologists. The opening of the text introduces the author’s motivation to study soft-shelled turtles, sparked by his observations while collecting specimens from river systems in the Gulf Coast. Webb raises questions about the geographical distribution and variations among turtle populations, aiming to understand how historical changes in aquatic habitats have influenced the species. He also outlines the methods and materials used in his research, preparing readers for a systematic account of the turtles, their habitats, behaviors, and the significance of their study in the broader context of river ecology and evolution. (This is an automatically generated summary.) Original publication data not identified Soft-shelled turtles https://www.gutenberg.org/ebooks/40005 80844 80844