New 3D reconstructions of a key sensory organ in ctenophores reveal an unexpected structural and functional complexity. The ...

The fossil of the Cambrian Period marine arthropod Fuxianhuiid, with gut preserved, discovered in Hunan province in southern China and dating to around 512 million years, is seen in this photograph ...

Cambrian Period fossils date to about 512 million years ago Fossils show invertebrates of various shapes and sizes They reveal animal legs, gills, guts, eyes and even nerves Jan 28 (Reuters) - ...

Here’s what you’ll learn when you read this story: The animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing ...

An extraordinary 512-million-year-old fossil site has been discovered in southern China, preserving in vivid detail almost an entire ecosystem from a time shortly after Earth’s first mass extinction ...

University of Cambridge and Anglia Ruskin University (ARU) provide funding as members of The Conversation UK. An upside-down jellyfish drifts in a shallow lagoon, rhythmically contracting its ...

Add Yahoo as a preferred source to see more of our stories on Google. One major division of the kingdom Animalia is Cnidarians (animals built around a central point) and bilaterians (animals with ...

One major division of the kingdom Animalia is Cnidarians (animals built around a central point) and bilaterians (animals with bilateral symmetry), which includes us humans. A study found that the sea ...

Jellyfish and sea anemones are curious creatures: these organisms evolved without a brain and, as scientists discovered only in the past few years, don’t need one to sleep. The animals do, however, ...

Brainless upside-down jellyfish, like this one in its natural habitat near Eilat, Israel, spend about one-third of their time asleep. Gil Koplovitch Why do animals—including humans—sleep? This ...

Jellyfish seem to sleep for about 8 hours a day, take midday naps and snooze more after a bad night’s sleep – just like us. Sleep is thought to have first evolved in marine creatures like these, and ...