Turtle taxonomy Now this is what I call a useful taxonomy document Turtles of the World Annotated Checklist of Taxonomy and Synonymy 2009 Update with Conservation Status Summary Turtle Taxonomy Working Group Turtles of the World Checklist v2 2009 Twenty pages of literature cited Emys are back to four species annotation 16 with Blanding s and Western pond turtle Pseudemys confusion is resolved Lots more info still working through it Regards