At more than 50 cm (20 inches) in height, the remarkable new species Cyathophycus balori is the largest known member of its genus Cyathophycus, and one...
The highly-diverse Middle Ordovician fossil site at Castle Bank, Wales, is directly comparable with the famous Burgess Shale and Chengjiang biotas in paleoenvironment...
Marine biologists have described a third species of branching syllid worm — and the second within the genus Ramisyllis — living inside an undescribed...
A research team led by University of Alberta marine biologists has discovered a new species of sea sponge living off the coast of British Columbia, Canada.
Desmacella...
Sea sponges appeared on our planet about 640 million years ago, much earlier than any other animal, according to a study published this week in the Proceedings...