This sea teemed with marine life, its abundance and diversity rivaling modern-day sea life. However, in the Ordovician, the creatures were invertebrates, or organisms lacking a backbone, such as ...

Some "extremely rare" fossils that date back 450 million years have revealed a new-to-science species. They were retrieved from a famous fossil site in New York State, USA – and best of all? They're ...

Researchers have uncovered a golden-colored, 450-million-year-old fossil of a new arthropod species, preserved in fool’s gold ...

Crinoids first appeared in Early Ordovician rocks ... some are not and may be found as high as 5 kilometers above sea level. Mollusca, Pelecypoda ("clams, scallops, oysters, mussels") - Animals in the ...

Museum Wales researchers found the fossils in rocks laid down under the sea more than 460 ... "It coincides with the 'great Ordovician biodiversification event', when animals with hard skeletons ...