Trilobite fossils from upstate New York reveal 'extra' set of legs

A new study finds that a trilobite species with exceptionally well-preserved fossils from upstate New York has an additional set of legs underneath its head. The research suggests that having a fifth pair of head appendages might be more widespread among trilobites than once thought and helps researchers better understand how trilobite heads are segmented.

https://www.sciencedaily.com/releases/2024/09/240912135844.htm