A class of invertebrate animals belonging to the subkingdom Annuloso.
This subkingdom is known by naturalists under the name of the Arthropoda.
subkingdom, sub-king′dum, n. a subordinate kingdom: a division of a kingdom: a subdivision.
The subkingdom of the Arthropoda is again subdivided into six classes.
This subkingdom comprises at present such familiar forms as the crinoid, the starfish, and the sea urchin.
The subkingdom Molluscoids has been richly represented by both the so-called “sea mosses” and brachiopods.
subkingdom sub·king·dom (sŭb'kĭng'dəm)
A taxonomic category constituting a major division of a kingdom.