EOANNULARIA Caudri, 1974

 

type species: Epiannularia pollonaisae Caudri, 1974; OD.Epiannularia Caudri. 1974(*512), p. 305.

Test discoidal, up to 2.6 mm in diameter, flattened to saucerlike, thin centrally but thickening toward the periphery, dorsal side may have clear central plug of shell material, all early chambers visible on ventral side, megalospheric test with bilocular nucleoconch followed by a zone of arcuate chambers and then by undivided cyclic chambers, microspheric test spiral in the early stage. later with cycles of chambers, adult with undivided annular chambers in a single layer, periphery rounded: wall calcareous, translucent. coarsely perforate, surface finely granular. M. Eocene: Venezuela.

 

Remarks: Resembles Eoannularia in the early stage but has undivided cyclic cham­bers in the later stage.