Geinitzinidae

Geinitzinidae; Temporal range: Late Devonian - Late Permian
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Retaria
Class:	Foraminifera
Order:	Fusulinida
Superfamily:	Geinitzinacea
Family:	Geinitzinidae; Bozorgnia 1973
Genera
	Geinitzina; Eonodosaria; Frondilina; Howchinella; Lunucammina; Spandelinoides;

The Geinitzinidae is an extinct family of Foraminifera from the late Paleozoic (U Dev. - U Perm) included in the Fusulinida that comprises genera characterized by unserial tests (chambers arranged in a single row, or line, in which walls are double layered. The outer layer is of light colored hyaline (glassy) radial calcite. The inner layer is a dark, secreted, microgranular calcite.

References

Alfred R. Loeblich Jr and Helen Tappan,1988. Forminiferal Genera and their Classification. E-book
Geinitzinidae Paleobiology Database, 9 Mar 2013

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