"Most of the phyla we know today we can see already in the Cambrian and the animals of the Burgess Shale," said Caron. But the fossils still look very strange. "They certainly show evidence of ...

For over a century, scientists have been puzzled by a mysterious fossil called Helmetia expansa, an ancient arthropod from ...

"Derek Briggs and I were the first people to take a kind of cladistic and cold-eyed look at the way these weird Cambrian animals interrelated. The idea they included many new phyla was not supported, ...

Researchers formally describe Helmetia expansa, offering new insights into its anatomy, behavior and evolutionary relationships.

Scientists say these are all markers of animal consciousness, a sign that animals, from Labrador retrievers to cuttlefish to ...

Rhinos that flourished across much of North America 12 million years ago gathered in huge herds, according to a new study.

A serendipitous find in the National Museum of Natural History’s collections yielded just the second known specimen of a ...

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