Echinozoa n. pl. : The Echinodermata.

Example:


Taxonomy
Echinozoa, invertebrate zoology, paleontology, echinodermata, echinoderms, subphylum, body, globoid, symmetry, Sci-Tech, Cambrian, ek, meridional, appendages, Unanswered questions, classes, Holothuroidea, sister group.

Defination from the web:
Echinozoa ( ′ekənō′zōə ) ( invertebrate zoology ) A subphylum of free-living echinoderms having the body essentially globoid with meridional symmetry ... The Echinozoa range from the Early Cambrian to the present day. ...