Arizona Mud Turtle vs. Yellow Mud Turtle

Close relatives (the Arizona Mud Turtle was once a subspecies of the Yellow); the Arizona in south-central Arizona, the Yellow in the far southeast. A: The first shield down the middle of the back does NOT touch the second edge shield in the Arizona Mud Turtle; the first shield down the middle of the back TOUCHES the second edge shield in the Yellow Mud Turtle. Both have a plain yellow throat; the shield check needs a clear photo of the front of the shell from above. Otherwise the range decides.

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

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