The archaic sponge reef-dwellers of the Cambrian gave way to bryozoans—tiny, group-living animals that built coral-like structures. Ordovician reefs were also home to large sea lilies ...

Throughout the world, there are creatures that haven't evolved for millions of years, and these eight living fossils ...

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 ...

Scientists at the Monterey Bay Aquarium Research Institute identified an intriguing new deep sea species off of California. It's see-through, can glow, and nabs prey with a large hood. At one point ...

“Only recently have cameras become capable of filming bioluminescence in high-resolution and in full color,” Haddock added.

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 ...

It took nearly 25 years for biologists to discover that a swimming and glowing organism in the ocean’s midnight zone was ...

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 ...

These Weird Sea Creatures Can Fuse to Become a Single Animal When Injured An unintentional discovery is at the origin of this study. Soto-Angel began investigating the topic after a larval ...

Wormy creatures had long been wriggling along ... Like more familiar echinoderms such as sea stars and sea urchins, the Ordovician sea lily fossil and modern basket star shown here have a body ...

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

The discovery could have implications for human medicine Alexa Robles-Gil Despite their often dangerous stings, these creatures create serene scenes as they float through the deep sea Text by ...