admit it you just want to see more pictures of the soft shellIf you can show some pics of the front of the carapace (right behind the head), the side view of the head, and a couple of shots looking down the nose, that will help narrow it down.
Spiny softshells will have (rounded) spines on the carapace, and smooths will be smooth. The presence of a ridge inside the nostrils also helps determine species.
--Berkeley
admit it you just want to see more pictures of the soft shell