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Xiphactinus audax 87 and 82 million years ago during the Coniacian, Santonian, and Campanian stages of the Late Cretaceous Niobrara Chalk Formation...
View full detailsKnightia eocaena mortality, unrestored specimen Eocene (51.98 Million Years Ago) Green River Formation, Wyoming, USA In Stone Fossils Private Quar...
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