It looks like a Scorpoides subspecies from Surinam or Guyana or somewhere in that necks of the woods. However, the specimen in the photo has a very deformed carapace - looks stunted.
::What kind of turtle is this?
::The shell is soft and it looks terrible. It seems too small for its age and its shell is pyramiding. :: :Actually it is in the family of scorpion mud turtles. There are several subspecies in this group. I have a breeding trio, that I've had for about 10 years. There should be 3 keels on it carapace some subspecies the keels are more prominent but that is what it looks like.