Acrocanthosaurus, claw of hand Argentinosaurus Spinosaurus means "spine lizard

Spinosaurus means "spine lizard

It was heavy and supported by the last seven tail vertebrae

Echinoderms have an internal water canal system and tube feet with suckers that they use to move

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The Cupstone Question

Acrocanthosaurus, claw of hand Argentinosaurus Spinosaurus means "spine lizardAcrocanthosaurus (meaning "high spine lizard" because of the spikes growing out of its spine) was a fierce predator that was roughly 30 40 feet (9 12 m) long and weighed about 5,000 pounds (2300 kg). It had a big head, with a 4. 5 foot (1. 4 m) long skull and 68 thin, sharp, serrated teeth. It had 17 inch (43 cm) spikes extending from its vertebrae, along the neck and tail that may have formed a thick, fleshy sail on its back. It had powerful arms,