Origin of echinodermfrom Modern Latin Echinodermata: see echino- and -derm
any of a phylum (Echinodermata) of marine animals with a water-vascular system, and usually with a hard, spiny skeleton and radial body, including the starfishes and sea urchins
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.
Origin of echinodermFrom 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
Ancient Greek ἐχῖνος (ekhinos, “hedgehog”) + δέρμα (derma, “skin”)
- Carpenter, "Notes on Echinoderm Morphology," Quart.
- Eschscholtz at the Marshall Islands in 1825, Balanoglossus was described as a worm-like animal belonging to the Echinoderm order of Holothurians or sea-cucumbers.
- This creature displays an almost unexampled frequency and extent of distribution in the whole North Sea, in the western parts of the Baltic, near the Faroe Islands, Iceland, Greenland and the English coasts, so that it may be regarded as a characteristic North Sea echinoderm form.
- The problem of the interrelations of the classes will thus be reduced to its simplest terms, and even questions as to the nature of the primitive Echinoderm and its affinity to the ancestors of other phyla may become more than exercises for the ingenuity of youth.
- Mucronalia, foot reduced, but still operculate, eyes present, animal fixed by its very long proboscis which is deeply buried in the tissues of an Echinoderm, no pseudopallium.