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Echinodermata

Introduction: Echinodermata

Description of Echinodermata

Echinodermata: 6,000 modern species; adults are radially symmetrical and have an endoskeleton of calcareous ossicles, partitioned coelum, uncentralized nervous system, and no excretory organs; are exclusively marine.
Source: CRISP

Echinodermata: A phylum of the most familiar marine invertebrates. Its class Stelleroidea contains two subclasses, the Asteroidea (the STARFISH or sea stars) and the Ophiuroidea (the brittle stars, also called basket stars and serpent stars). There are 1500 described species of STARFISH found throughout the world. The second class, Echinoidea, contains about 950 species of SEA URCHINS, heart urchins, and sand dollars. A third class, Holothuroidea, comprises about 900 echinoderms known as SEA CUCUMBERS. Echinoderms are used extensively in biological research. (From Barnes, Invertebrate Zoology, 5th ed, pp773-826).
Source: MeSH 2007

Echinodermata: Related Topics

These medical condition or symptom topics may be relevant to medical information for Echinodermata:

Terms associated with Echinodermata:

More specific terms for Echinodermata:

Source - MeSH 2007

Source - CRISP

Broader terms for Echinodermata

Source - MeSH 2007

Source - CRISP

The term Echinodermata can be used for:

Source: CRISP

Other terms that may be related to Echinodermata:

Source: CRISP

Hierarchical classifications of Echinodermata

The following list attempts to classify Echinodermata into categories where each line is subset of the next.

MeSH 2007 Hierarchy:

Interesting Medical Articles:

Medical dictionaries:

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