Schizorhiza - Sawfish
Schizorhiza is a fossil genus of cartilaginous fish, containing a single accepted species Schizorhiza stromeri. Its fossils are found in rocks dating from the Campanian and Maastrichtian stages; it thus lived between about 83.6 and 66 million years ago. Due to its unique rostral teeth, Schizorhiza is placed in the unique subfamily Schizorhizinae, of which it is the only species presently known of this type of skate/ray/shark.