Scientists revisiting mysterious 540-million-year-old microfossils from Brazil have overturned a major idea about early animal life. What were once thought to be trails left behind by tiny worm-like ...
A trove of fossils uncovered in northwestern Canada suggests that complex animals evolved in North America earlier than previously thought. The site houses more than 100 fossils, including six taxa ...
Goblet-shaped sea jelly relatives with miniature “arms.” A plump, legless creature resembling a sausage. Long, wormlike animals tipped with flat “holdfast” discs for anchoring to the seafloor.
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