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. Its Mesozoic suborder, the Sclerorhynchoidea, cannot be unequivocally assigned to the Rajiformes (skate and ray) or to the Pristiformes (sawfish) order.
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