Megalodon Tooth Progression With 8, 6 Inch Teeth Spinosaurus Each segment of the thorax

Each segment of the thorax has legs

Other paleoanthropologists argue that its brain size of 510 cc (in contrast to 1470's 750 cc) indicates a size difference too great to be due to sexual dimorphism and represents a separate species

Sharks arose in the Devonian Age some 400 million years ago

Maiasaura was probably closely related to Brachylophosaurus

Fossils from this site provide unique information about the early evolution of mammals

Megalodon Tooth Progression With 8, 6 Inch Teeth Spinosaurus Each segment of the thoraxThis replica Megalodon tooth progression shows 2 sets of 4 rows of 6 inch teeth. The teeth are cast from real teeth. The jaw section is our reconstruction of a jaw section because jaws are rarely preserved because they are cartilage that seldom fossilized. Megalodon had 46 front row teeth, 24 in the upper jaw and 22 in the lower jaw. Most sharks had at least six rows of teeth, so a Megalodon would have had about 276 teeth in its mouth at any given