Cagle's Map Turtle vs. Pond Slider

They bask together on the Guadalupe and San Antonio rivers. A: Cream marks on top of the head and across the chin; no red in the Cagle's Map Turtle; a red (or yellow) patch behind the eye in the Pond Slider. B: A row of dark-tipped knobs in the Cagle's Map Turtle; smooth, no knobs in the Pond Slider.

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

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