Echinoderms such as starfish are unusual for their five-fold body symmetry. Maps of gene-expression patterns show how this body plan was acquired, and that the genes specifying head structures do ...

This is truly a radical transformation of the ancestral bilaterian body plan." Starfish are echinoderms, a form of invertebrate marine animals known for radial symmetry and having spiny skin.

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

Most ptenoglosates possess radulae distinctive to the group (Ponder & Lindberg 1997). Most eulimids are highly specialized and exclusively ectoparasitic (external parasites) on echinoderms. Most are ...

image: Fossil echinoderms—including the edrioasteroid here (Carneyella pilea, Corryville Formation, Dent, Ohio, CMCIP 26324 specimen 12.8 mm wide) attached to a crinoid stem in life position ...

They estimate that the global production from all echinoderms is over a tenth (0.1) of a gigatonne of carbon per year -- that is, more than a hundred thousand million kilograms. This is less than ...

Now researchers have gotten their first-ever look at similar tentacle-like structures in an extinct group of these echinoderms. It was suspected that the ancient marine invertebrates, called ...

While studying zoology at his native New Zealand’s Victoria University in Wellington, Pawson chose to focus his research on echinoderms, a group of marine invertebrates that includes sea stars ...

Starfish, also known as sea stars, belong to a group of animals called echinoderms, which includes sea urchins and sea cucumbers. Their strange body plans have long puzzled biologists. Most ...

Mollusks get both larger and smaller than all the Echinoderms and they are more diverse both in terms of number of species and the ecological niches they fill. If you don’t believe me that Mollusks ...