Genera of family “Clade E”


The genus differs from Saccammina and Leptammina in the shape of the test /elongate rather than approximately spherical) and the presence of a nipple-like apertural structure, which is quite unlike the simple round opening that characterizes these two genera.


Pyriform to ovoid test, wall of thick transparent flexible matrix with a thinner outer agglutinated covering, terminal simple aperture.


Monothalamous test, characterised by the development of a flared, conical or trumpet-shaped apertural structure which apparently serves to attach the test to small sand grains.