Project Gutenberg 2012-06-16 Public domain in the USA. 452 Webb, Robert G. (Robert Gravem) 1927 2018 Webb, Robert Gravem 62063091 North American Recent Soft-Shelled Turtles (Family Trionychidae) 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.) file:///public/vhost/g/gutenberg/html/files/40005/40005-h/images/cover.jpg Reading ease score: 56.8 (10th to 12th grade). Somewhat difficult to read. en Soft-shelled turtles QH Text Browsing: Nature/Gardening/Animals Browsing: Science - Genetics/Biology/Evolution Category: Science - Biology Category: Nature/Gardening/Animals 721834 2025-06-16T09:52:21.782449 text/html 721779 2012-06-16T16:20:08 text/html; charset=iso-8859-1 4818460 2025-06-16T09:52:43.516385 application/epub+zip 4829190 2025-06-16T09:52:27.722446 application/epub+zip 255758 2025-06-16T09:52:22.838434 application/epub+zip 3760759 2025-06-16T09:52:50.945831 application/x-mobipocket-ebook 3719922 2025-06-16T09:52:38.683393 application/x-mobipocket-ebook 447009 2022-09-18T10:16:25.923525 application/x-mobipocket-ebook 613801 2023-09-17T11:48:18.907349 text/plain 15533 2025-06-16T09:52:51.129818 application/rdf+xml 10742 2025-06-16T09:52:23.006463 image/jpeg 2160 2025-06-16T09:52:22.922447 image/jpeg 5433425 2025-06-16T09:52:21.990464 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia