Parodotus cf. benedeni (Le Hon 1871)
32mm. Not so sure about the info and determination on this one, therefore the cf. Picked it up on an internet auction where the only information I could get was "Parotodus, South Carolina". However, with the help of the friends on the id forum I was able to narrow down the id and also am pretty certain that it was found in a river in the Oligocene.