Aggerostramen Loeblich & Tappan 1985

Aggerostramen es un género de foraminífero bentónico de la familia Lacustrinellidae, de la superfamilia Psammosphaeroidea, del suborden Saccamminina y del orden Astrorhizida.​ Su especie tipo es Psammosphaera rustica. Su rango cronoestratigráfico abarca el Holoceno.

Test in the early stage with a few angular, tetrahedral, or conical chambers attached to other foraminifers, later chambers are less angular and may be rounded or fusiform, and the test may lie free on the substrate, early chambers may be closely appressed and form a straight uniserial series but later are somewhat irregular in arrangement and interconnected by distinct tubular stolons, up to five such stolons may project from an individual chamber and result in an irregularly branching test; wall consisting largely of a pavement of sponge spicules aligned in parallel groups or with smaller grains of quartz in the interstices, commonly with some long spicules that project beyond the chamber itself and may connect to adjacent chambers or to the substrate; aperture in the early stage a simple opening, in the later chambers at the end of the stolonlike necks. Holocene; Atlantic; Caribbean. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)