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Texas Formation: Ogallala Age: Late Miocene
many fossilized shark teeth reflect a 'pathological' condition
Location: Brazil Formation: Santana
Genus: Araucaria
Pteranodon Poster - 18" x 24"
Acrocanthosaurus, claw of foot Dimetrodon Texas Formation: Ogallala Age: LateAcrocanthosaurus (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,
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US$ 5844.00