Onchopristis is a species of shark that lived during the age of the dinosaurs.  It resembled the modern day Sawfish.  It would use its saw like snout to kill its prey than eat it up.  Unlike its modern day relative this fish swims up rivers to spawn.  It is unknown if it dies after it lays its eggs and fertalized like the salmon.  This fish is one of the favorite foods of the large predator Spinosaurus.

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