Spiny Softshell vs. Smooth Softshell

The front edge of the shell: Spiny Softshell — small spines or bumps along the front edge; Smooth Softshell — smooth — no spines or bumps. The shell pattern: Spiny Softshell — dark spots or rings on a leathery shell; Smooth Softshell — plain, no pattern or dark spots or rings on a leathery shell (these overlap, so it only helps). The head marks: Spiny Softshell — several yellow stripes, no patch; Smooth Softshell — plain or several yellow stripes, no patch (these overlap, so it only helps).

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

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Wildsight identifies the reptiles and amphibians of the United States. Every comparison