Remarkable fossils found in North Greenland have helped researchers solve a 500-million-year-old puzzle surrounding ...

Scientists found that ancient squid-like fossils are actually early arrow worm fossil relatives, not cephalopods.

A 500-million-year-old enigma concerning ancient squid-like creatures has at last been deciphered. Researchers from ...

This site yielded fossils of a newly identified species of ancient worm, Timorebestia koprii. Unlike modern arrow worms, which range from 3mm to 1cm, Timorebestia reached a striking length of 30cm ...

Arrow worms are one of the oldest animal fossils from the Cambrian. While arthropods appear in the fossil record about 521 to 529 million years ago, arrow worms can be traced back at least 538 ...