When you think of Alaskan animals, you probably think of grizzly bears, moose, or salmon. However, by far the most numerous ...

What started as routine fossil cleaning turned into a major scientific surprise when researchers uncovered a tiny claw in a ...

A breakthrough discovery in Utah has revealed a 500-million-year-old chelicera fossil that is the oldest known spider and ...

A Cambrian fossil has been identified as the oldest known member of the chelicerates, a group that includes spiders and ...

Aubril. As a reward, he returned to cleaning an intriguing Cambrian arthropod fossil he had recently received for review. At ...

Researchers argue that a newly examined specimen found decades ago in Utah provides new clues to the ancestors of ...

Rudy Lerosey-Aubril A tiny claw in a 500-million-year-old fossil just rewrote the origin story of spiders. After a full da ...

Early arthropod specimens don’t have claws like these. Instead, Cambrian arthropods usually have an antenna in that position.

Megachelicerax cousteaui is named in honor of French explorer Jacques-Yves Cousteau. Lerosey-Aubril – who is also French – and Ortega-Hernández chose Cousteau for his work raising awareness of the ...

Learn how a fossil from Utah’s Wheeler Formation reveals where early spider relatives lived, how quickly complex animal body ...

A fossil originally discovered in the 1980s only recently received a closer look, revealing groundbreaking evolutionary ...