Daily Archives: April 17, 2011

Wooster’s Fossil of the Week: Oyster balls! (Middle Jurassic of Utah)

The technical term is ostreolith, but “oyster ball” is much more descriptive. These fossils are found by the thousands in the Carmel Formation (Middle Jurassic) in southwestern Utah. As far as I know, this is the only place they’ve ever … Continue reading

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