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Large Otodus Shark Vertebra with Mosasaur Tooth Fossil in Matrix - Morocco

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Large Otodus Shark Vertebra with Mosasaur Tooth Fossil in Matrix - Morocco

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Otodus obliquus Vertebra + Mosasaur Tooth
Extinct Mackerel Shark bones and Marine Reptile tooth

Oued Zem, Khourigba, Morocco, North Africa

Upper Paleocene Period - 60 Million Years Old

Otodus Vertebra : 1.84 in. diameter
Mosasaur Tooth : 1.29 in.

1 inch = 2.54 cm

A group of shark (Otodus) backbones resting on the original matrix as found with a Mosasaur tooth tucked away to the side. Natural and no repair or restoration done to this specimen.


The species of shark is the Otodus, which is one of the more well known of the Moroccan shark species. Otodus was among the group of the largest known predators at the time, with lengths up to 40 ft.

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous. During the last 20 million years of the Cretaceous period (Turonian-Maastrichtian ages), with the extinction of the ichthyosaurs and decline of plesiosaurs, mosasaurs became the dominant marine predators. They became extinct as a result of the K-T event at the end of the Cretaceous period, approximately 66 million years ago. Mosasaurs breathed air, were powerful swimmers, and were well-adapted to living in the warm, shallow inland seas prevalent during the Late Cretaceous Period. Mosasaurs were so well adapted to this environment that they gave birth to live young, rather than returning to the shore to lay eggs as sea turtles do.

This specimen comes from the phosphate mines located near Khourigba, Morocco and are dated to the Upper Cretaceous Period (99-65 Million Years Old)

Otodus is an extinct genus of mackerel shark which lived during the Paleocene and Eocene epochs, approximately 60 to 45 million years ago.