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Related to echinodermal: Chordates


Any of numerous radially symmetrical marine invertebrates of the phylum Echinodermata, which includes the starfishes, sea urchins, and sea cucumbers, having an internal calcareous skeleton and often covered with spines.

[From New Latin Echīnodermata, phylum name : echino- + -dermata, -skinned (from Greek derma, dermat-, skin; see -derm).]

e·chi′no·der′mal, e·chi′no·der′ma·tous (-dûr′mə-təs) adj.
References in periodicals archive ?
Despite well-developed cross-stratification, in thin section this lithofacies appears to be an echinodermal packstone.