Keywords echinoderms, sea stars, sea urchins, sand dollars, radial symmetry, spiny skin, water vascular system, locomotion, feeding habits, regeneration, reproduction, scientific research Email us ...

A human appetite hormone, bombesin, also controls feeding in starfish, showing it evolved over 500 million years ago. A team ...

They belong to the Echinoidea, one of the five classes of the phylum Echinodermata, the others being holothurians, crinoids, starfish and brittlestars. Like all echinoderms, echinoids have a skeleton ...

The diversity and abundance of echinoderm fossils is reflected in the Museum's large, world-class collection. Fossil echinoderms are numerous, due in part to the fantastic preservation potential of ...

However, new research finds that sea cucumbers are the only echinoderms—and among the only animals on Earth—that produce chemicals called triterpenoid saponins, which don’t poison the sea cucumbers ...

It was not so terribly long ago; that the original planktonic mix gave birth to some zillion critters with the advantage of ...