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Fossil Tooth, Onchopristis, Saw Fish Occidental Sahara Desert, South Morocco Cretacious Period (79-145 million years ago) Onchopristis is a genus of extinct giant sawfish that lived in the Lower Cretaceous to Upper Cretaceous in North Africa and New Zealand. It had an elongated snout lined laterally with barbed teeth. Onchopristis is a large sawfish, known from remains throughout North America, North Africa and New Zealand. It was very large, up to 8 m (26.2 ft) long when fully grown. As with modern sawfish, Onchopristis's eyes were on top of its head, to spot predators rather than prey, and its mouth and gills were under its body. Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Order: Sclerorhynchiformes Family: Sclerorhynchidae Genus: Onchopristis