Dr. Iverson said it is probably K. scorpioides, will post his answer when he gets back to me.
:I found one slightly scraped up the road on Cozumel Island(in the state of Quintana Roo on the Yucatan Penninsula) and can't figure out what it was. I have pics of the carapace and plastron, but no head shots(even after patiently waiting for 40 minutes). If multiple species are found on the island, I can post the pics on Monday for clarification. Thanks in advance! :-Damien