Lagenida

Lagenida Temporal range: Late Silurian - Recent
Scientific classification
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Retaria
Subphylum:	Foraminifera
Order:	Lagenida Loeblich and Tappan 1988
Superfamilies
Robuloidacea Nodosariacea

Lagenida is an order of benthic foraminiferal rhizaria in which the tests (shells) are monolamellar, with walls composed of optically and ultra-structurally radiate calcite, with the crystallographic c-axes perpendicular to the surface. Lagenids first appear in the Upper Silurian and continue to the Recent. They are currently divided into two superfamilies, the older Robuloidacea which range from the Upper Silurian to the Lower Cretaceous (Albian) and the younger Nodosariacea, ranging from the Permian to Recent.