How megalodon's teeth evolved into the 'ultimate cutting tools'

Megalodon, the largest shark that ever lived, is known only from its gigantic bladelike teeth, which can be more than 7 inches long. But these teeth, described by some scientists as the "ultimate cutting tools," took millions ...

Ancient sharks reared young in prehistoric river-delta nursery

Like salmon in reverse, long-snouted Bandringa sharks migrated downstream from freshwater swamps to a tropical coastline to spawn 310 million years ago, leaving behind fossil evidence of one of the earliest known shark nurseries.

Researchers reveal new New Zealand fossil dolphin

(Phys.org) —A newly recognised fossil dolphin from New Zealand, dubbed Papahu taitapu, is the first of its kind ever found and may be a close relation to the ancestors of modern dolphins and toothed whales, according to ...

Australia's stampeding dinosaurs take a dip

(Phys.org)—Queensland paleontologists have discovered that the world's only recorded dinosaur stampede is largely made up of the tracks of swimming rather than running animals.

A new species of horse, 4.4 million years old

Two teams of researchers, including a scientist from Case Western Reserve University, have announced the discovery of a new species of fossil horse from 4.4 million-year-old fossil-rich deposits in Ethiopia.

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