Invertebrates, which constitute over 95% of all animal species, are the unheralded engine underpinning Earth’s biodiversity and ecosystem functioning. Their astonishing diversity – ranging ...

Learn how starfish got their shape after a complicated evolutionary process, starting with an ancestor that lived 500 million ...

Researchers examine a 500-million-year-old fossil from Morocco and find out that echinoderms went from bilateral to pentaradial symmetry.

These echinoderms have soft, elongated bodies resembling their vegetable namesakes and typically grow 4-8 inches long in hadal environments. Unlike their shallow-water relatives, deep-sea sea ...

Researchers sequenced the knotty sea spider’s genome for the first time, revealing a missing gene that many other animals ...

A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a ...

Researchers have identified how thyroxine, a human thyroid hormone, can positively influence the life-critical calcification in soft corals, and have developed a unique technique for injecting ...

Water and air pose completely different challenges to animals on a number of levels.

Hall of Fossil Plants and Invertebrate Animals exhibit case in the Museum of Natural History, featuring "Kinds of Plants and Animals" which illustrates pre-Cambrian simple organisms.

From what the researchers were able to gather, the new species of pterosaur—dubbed Eotephradactylus mcintireae after Suzanne ...

Scientists captured the elusive Antarctic gonate squid on camera for the first time during a National Geographic expedition.