Explore Our Echinoderm Fossil Collection
Echinoderms are Marine invertebrates which include starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers. They have fivefold radial symmetry, a calcareous skeleton, and tube feet operated by fluid pressure. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone.