Mississippi Mud Turtle vs. Yellow Mud Turtle

Both are small mud turtles with a big hinged lower shell; they meet in central Oklahoma and Texas. A: Dark, with two yellow lines along each side in the Mississippi Mud Turtle; throat and jaws plain yellow, no lines in the Yellow Mud Turtle. B: Evenly domed and oval in the Mississippi Mud Turtle; low and flat-topped, the side plates edged yellow in the Yellow Mud Turtle. The Yellow Mud Turtle is the mud turtle of the western prairies, the Mississippi of the wooded east.

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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