Many Cambrian animals became extinct during the transition to the next geological period, ... Half-a-billion-year-old 3-eyed sea creature dubbed 'Mosura' breathed through big gills on its butt.

Creatures of Cambrian May Have Lived On. Share full article. 23. 23. By John Noble Wilford. May 17, 2010; ... was confined to the sea — and what is now Canada was just south of the Equator.

A new study says sea creatures follow a hypothesis called Cope's rule, which states that animal lineages will get heftier as time goes on. Published Thursday in Science, the study finds that the ...

Imagine drifting through a prehistoric sea more than 500 million years ago. The water teems with bizarre creatures, ... The Nightmare Shrimp That Ruled the Cambrian Oceans appeared... advertisement.

In places where sea-floor oxygen levels are a bit higher — about 0.5–3% of concentrations at the sea surface — animals are more abundant but their food webs remain limited: the animals still ...

But pinning down the exact origin of these squishy sea creatures, which are some of the earliest complex animals, is difficult. They rarely show up in the fossil record because jellyfish are 95 ...

The fuxhianhuiid lived nearly 50 million years before animals first emerged from the sea onto land, during the early part of the Cambrian explosion, when simple multicellular organisms rapidly ...

A new filter-feeding giant that trolled the Cambrian seas has been unearthed in Greenland. The species, dubbed Tamisiocaris borealis, used large, bristly appendages on its body to rake in tiny ...

Scientists have unearthed extraordinarily preserved fossils of a 520-million-year-old sea creature, one of the earliest animal fossils ever found, according to a new study.