Article
Article
Mesozoa
Article By:
Kozloff, Eugene Department of Biology, University of Washington, Seattle, Washington.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.417100
An obsolete term formerly used to describe a phylum of microscopic marine parasites. The name Mesozoa—the “in-between animals”—was for many years applied to the parasitic marine invertebrates called Dicyemida (Rhombozoa) and Orthonectida. These two groups, although similar in some respects, are now treated as separate phyla, so there is no reason to preserve Mesozoa in the zoological vocabulary. See also: Animal kingdom; Dicyemida (Rhombozoa); Orthonectida
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