Classification: Eukaryotes: Animals: ParaHoxozoa: Bilaterians: Nephrozoa: Protostomes: Spiralia: Lophotrochozoa: Mesozoa |
Articles relating to the Mesozoa, minuscule, worm-like parasites of marine invertebrates. Generally, these tiny, elusive creatures consist of a somatoderm (outer layer) of ciliated cells surrounding one or more reproductive cells. A recent study recovered Mesozoa as a monophyletic group that emerged in the Lophotrochozoa as sister of the Rouphozoa.