Just looked it up for clarification there are hybrids of the two. Here’s a link if anyone’s interested.
http://www.theturtlesource.com/i.asp?id=100200317&p=Hybrid-Florida-and-Spiney-Softshells
http://www.theturtlesource.com/i.asp?id=100200317&p=Hybrid-Florida-and-Spiney-Softshells