Bizarre Ancient Creatures
Read our COVID-19 research and news.
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By Elizabeth Culotta
New fossils suggest that Spinosaurus was a terror of Cretaceous seas
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By Sid Perkins
Ancient flying reptile had throat pouch that may have let it snatch fish from the water
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By Michael Balter
Titanosaur was twice as long as T. rex, likely had no natural enemies
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By Xochitl Rojas-Rocha
A 435-million-year-old fossil from Wisconsin may give mysterious "thylacocephalans" a twig on the family tree
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By Eli Kintisch
New research suggests burrowing sea creatures moderated global oxygen levels, allowing animals to evolve