the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Polyzoa > [noun] > member of > receptacle for ova
ovicell1856
marsupial capsule1878
ooecium1881
oocyst1882
1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 132 Some persons may serve only for the reception of ova, and form the so-called marsupial capsules.