Sea stars and their relatives eat, breathe and scuttle around the seafloor with tiny tube feet. Now researchers have gotten their first-ever look at similar tentacle-like structures in an extinct ...

The impact on levels of carbon dioxide in the Earth's atmosphere by the decaying remains of a group of marine creatures that includes starfish and sea urchin has been significantly underestimated. The ...

The evolution of the sea star, sea urchin, and other echinoderms’ body shape during the Cambrian and Ordovician periods was faster and more dramatic than their ecological innovation, according to a ...

The film explores the fascinating world of echinoderms, focusing on sea stars and their relatives, such as sea urchins and sand dollars. It describes their unique body structures, including radial ...

Scientists have discovered a new species that lived more than 500 million years ago -- a form of ancient echinoderm that was ancestral to modern-day groups such as sea cucumbers, sea urchins, sea ...

Echinoderms are a phylum of exclusively marine deuterostome invertebrates characterized by pentaradial symmetry in adults, a calcareous endoskeleton composed of ossicles, and a unique water vascular ...

A bold claim about the origins of the echinoderms is based on newly discovered fossils from China. But many pieces are still missing from this part of the fragmented puzzle of life's evolutionary ...

Starfish are some of the most recognisable animals in the world. But their simple appearance belies an evolutionary mystery - how did these animals evolve such an unusual shape? A new fossil discovery ...