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Martino and the very dedicated Dave Phillips
and new discoveries are made frequently
but these are distinct enough to derive the pedal phalange formula 2-3-4-5-0 that is typical for the genus (Ostrom 1972b) The claw impressions are also relatively distinct and allow for comparison with the forelimb claws
It had a jointed neck
Mammuthus subplanifrons
Spinosaurus, giant claw Pteranodon Martino and the very dedicatedSpinosaurus probably had over 70 straight conical teeth that lacked serrations. They also varied greatly in size and length. Most of the teeth found are under 3 inches long without the root. However, a few teeth up to 12 inches long including the root have been found. Spinosaurus was the biggest of all the carnivorous dinosaurs, larger than Tyrannosaurus and Giganotosaurus. It lived during part of the Cretaceous period, about 112 million to 97 million
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