Agglutinated test, early stage trochospiral, later triserial; inflated chambers.
Genera of family “Incertae sedis”
Test subfusiform, early stage trochospiral, later triserial, wall coarsely to finely agglutinated, held in an organic cement.
Uniserial and rectilinear test, globolar proloculus followed by an elongate series of gradually enlarging chambers. Thin and flexible wall.
Large stout test with early trochospiral coil of four to five chambers per whorl, rapidly reducing to uniserial in the adult.
Agglutinated biserial test. Each chamber extends into fistulose chamberlets.
Biserial test, agglutinated walltraversed by canaliculi that may open as perforations. Aperture a low arch or slit at the base of the apertural face