This prehistoric fish was a carnivore. It was 8 ft. long. It was a medium-size predator fish that lived in the late Cretaceous seas. It had a long sword like snout and blade like teeth. Its teeth were positioned to stab fleeing prey. It had long, bony pectoral like saw blades as well. Fully grown adult averaged between 6 to nine ft. long. Complete skeletons of Protosphyraena are very rare. Like other late Cretaceous sea monster, Protosphyraena most likely went extinct 65 million years ago.
This is the picture of a Protosphyraena. I found this picture on animals.nationalgeographic.com.
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