1.7" Sawfish Fossil Tooth Barb Onchopristis Numidus Cretaceous Dinosaur Era COA
Location: Oued Zem, Morocco
Weight: 0.2 Ounces
Dimensions: 1.7 Inches Long, 0.9 Inches Wide, 0.5 Inches Thick
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Cretaceous Dinosaur Era, 100 million years ago.
Onchopristis, a giant sawfish from the Upper Cretaceous Period, is notably represented by numerous fossils discovered in the Sahara Desert. Distinguished by its elongated 2.5-meter rostrum lined with sharp barbs, it earned the name "Giant Saw." This strict crustacean feeder used its rostrum to excavate prey from shallow marine environments, analogous to modern sawfish behavior. While primarily oceanic, fossil data indicate Onchopristis migrated into freshwater rivers to reproduce, with females depositing eggs in safer, shallow waters. During these migrations, adults faced predation risks from Spinosaurus, evidenced by puncture marks on sawfish rostra and even a barb lodged in a spinosaurid jaw. Survival depended on large numbers to offset losses caused by predators and environmental stresses such as drought.
