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Morrison Formation of Moffat County
are interpreted as body fossils of unknown affinities rather than trace fossils
They typically feed on smaller fish and invertebrates
Germany is world renowned for the near-perfect preservation of the fossils that it yields
75 million years ago and had characteristics distinctive of the robust australopithecines Paranthropus boisei proved to be a treasure
Acrocanthosaurus, claw of foot Triceratops Morrison Formation of Moffat CountyAcrocanthosaurus (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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