Protosphyraena was a medium-size predatory fish from the Late Cretaceous period with a long, sword-like snout and blade-like teeth used to stab fleeing prey. It also had long, boney pectoral fins with leading edges serrated like saw blades. The exact purpose of these saw-like fins is a matter of scientific debate. Protosphyraena averaged between six and nine feet (two and three meters) long. It went extinct 65 million years ago.

In The Land Before Time

Protosphyraena appears in the opening of The Land Before Time IX: Journey to Big Water where a school of them pass by the the title screen.

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