Excavations by a University of Kansas paleontologist working in a treasure trove of fossils called the "Spence Shale Lagerstätte" have revealed an ancient sea worm unknown to science until now. The ...

Researchers keep pulling unnamed animals from the Clarion-Clipperton Zone, a vast stretch of abyssal Pacific seafloor between ...

Pelagic annelids are largely understudied, with poorly known origins, an unrecognized diversity and delicate bodies. Their mystery lies in their original discovery, which in most cases, dates back ...

Scientists have uncovered the earliest fossil evidence of annelids (ringed worms) in Cambrian microfossils dating back approximately 535 million years ago. This discovery offers fresh insights into ...

Analyses of two independent phylogenomic datasets suggest an explosive radiation at the origin of Spiralia, with implications for understanding the group's evolutionary history.

Polychaete annelids represent one of the most diverse and ecologically significant groups of marine worms, inhabiting intertidal sands, deep-sea trenches and every habitat in between. Their remarkable ...