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Fossils
Orthoceras are dated to the lower Ordovician to Triassic ages (500 to 190 million years ago). The name "Ammonite" originates from the Greek horned ram called Ammon. Ammonites are perhaps the most widely known fossils, bearing a typically banded spiral formation shell. These squid-like creatures lived in the sea between 65-415 million years ago.
