Leonardo da Vinci's earth-shattering insights about geology | Leonardo da Vinci | The Guardian
Michigan Shark Teeth - Fossil Hunting Trips - The Fossil Forum
I found this very well fossilized jaw bone on the Nemaha river, in the southeast corner of Nebraska, my guess is it's a boar jaw, but I'm unsure : r/fossilid
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Bone in the ground' turns out to be big fossil find | Local News | santafenewmexican.com