Large Invertebrate Nodule - Various Ammonite, Bivalve Fossils - Fox Hills Fm. For Sale

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Large Invertebrate Nodule - Various Ammonite, Bivalve Fossils - Fox Hills Fm.:
$199.99

Species: Various, Likely Mostly Hoplospahites sp.

Formation: Fox Hills Formation

Location: Unknown, Likely South Dakote

Age: Maastrichtian Cretaceous, 72-66 million years old

A large nodule of invertebrate fossils containing ammonites (likely Hoploscaphites gluosus or another Hoploscaphites sp.), bivalves and what appear to be small gastropods. It is split into 3 pieces which fit together.

Ammonites are an extinct group of shelled cephalopods that were highly successful in their time. Ammonites were on Earth for about 343 million years (409-66 million years old), and can be found on every continent. There are over 10,000 species of ammonite currently described, and many more remain to be discovered.

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Large Invertebrate Nodule - Various Ammonite, Bivalve Fossils - Fox Hills Fm.

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