Mammoth Tusks, 7.5 feet around the curve Pachycephalosaurus Aragonite is a carbonate mineral

Aragonite is a carbonate mineral

Brittle stars are a type of starfish that are uniquely classified in their own group called Ophiuroidea

The first comprehensivce book on the fossils of West Virginia

The teeth in the back rows were replacement teeth

Mammoth Tusks, 7.5 feet around the curve Pachycephalosaurus Aragonite is a carbonate mineralMammoths belong to the order Proboscidea, which also includes the American Mastodon and the African and Indian Elephant. The larger species of Mammoth, which appeared about 4 MYA, became extinct about 10,000 years ago, while some of the smaller species existed until about 4,000 years ago. The specimen here is a Woolly Mammoth discovered in Alaska. The Woolly Mammoth is well studied, as several well preserved specimens have been found; it also appears