Misidentified remains provide a missing link that helps resolve a gap of more than 5 million years in fur seal and sea lion evolutionary history.
A rodent closely related to guinea pigs used its powerful incisors to do more than just bite things.
The reptile is an extinct species called the philydrosaurus, and likely lived during the Early Cretaceous, about 145 to about 100 million years ago.
The animal that once lived in the ancient sea looks like a bird's nest in fossil form.
Fossils suggest the creature originated on the Asian subcontinent while it was still an island.
Evidence has been uncovered that connects the ichthyosaur with its transition from land to sea.
A fossil tusk rescued from the sea proves mammoths swam to Southern California's Channel Islands much earlier than thought.
Prevalence of the dinosaur's skin in fossil record may have more to do with texture, toughness than population density or habitat.
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