Discover and read the best of Twitter Threads about #purisimaformation

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Ancient marine mammal buried in mud 5 to 7 million years ago, at low tide today. #KingTides #FossilFriday #PurisimaFormation
More marine mammal bones exposed by negative tide. #FossilFriday #KingTides #LowTide ImageImageImageImage
This fossil bone looks like a 3 foot long scimitar.. maybe a rib fossil bone. ImageImage
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