Some members of this phylum have polian vesicles and Tiedemann's bodies that connect to a structure that pulls water in from the madreporite and leads it down ambulacral grooves to ampulla.
Some members of this phylum have polian vesicles and Tiedemann's bodies that connect to a structure that pulls water in from the madreporite and leads it down ambulacral grooves to ampulla. Teeth are attached to an Aristotle's lantern in other members of this phylum, and its ring canal is part of the (*) water vascular system. Many of its most famous members are found in the class Asteroidea. Its members also exhibit radial symmetry, often five-fold. Identify this phylum that contains sea cucumbers, sea urchins, and sea stars.
Some members of this phylum have polian vesicles and Tiedemann's bodies that connect to a structure that pulls water in from the madreporite and leads it down ambulacral grooves to ampulla.
{Echinoderm}ata [or {echinoderm}s]