The giant ground sloth may be the most beloved of all of Iowa’s Ice Age animals, thanks to Rusty the Giant Sloth charming ...
Smithsonian Magazine on MSN
Sharklike fish with weird, buzz-saw jaws sliced through the seas, then vanished. Now, paleontologists are unraveling their secrets
The fossil whorls were a mystery. In 1899, geologist Alexander Karpinsky described an odd spiral of teeth, the first known fossil of its kind, uncovered from the ancient rocks of Krasnoufimsk, Russia.
Quick Take Reaching 30 feet and 3 tons was the mandatory size for this apex marine predator. The 5-foot skull of ...
This lopsided dentition, combined with the unusual ability to move the sides of their jaws independently, enables them to ...
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