Their leitmotiv set by the surprisingly variable Allogromia laticollaris, such uniparentally reproducing Foraminifera as Cornuspira lajollaensis, Calcituba polymorpha, Spiroloculina hyalina, Rosalina columbiensis, and Trichohyalus aguayoi appear in laboratory populations to possess a variation potential fully equivalent to that of the biologically studied biparental species of Foraminifera and one that is appreciably greater than the geologically oriented taxonomy of the group generally would indicate.

A striking example of isomorphism between an enigmatic Mediterranean allogromiid and a typical embryonic miliolidean suggests an alternate route by which the Miliolidea might have evolved. The free-living milioline stage of the otherwise sessile ophthalmidiid Calcituba polymorpha is in some specimens so similar to variants of both Spiroloculina hyalina and Nubercularia lucifuga that identification in the genealogically vacuous (at the parent-offspring level of refinement) limbo of the fossil record is almost impossible and doubts are raised about some miliolidean phylogenetic interpretations.

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