Fusulinida

Fusulinida; Temporal range:
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	SAR
Phylum:	Retaria
Subphylum:	Foraminifera
Class:	Globothalamea (?)
Order:	†Fusulinida
Superfamilies
	Archaediscacea; Colaniellacea; Earlandiacea; Endothyracea; Fusulinacea; Geinitzinacea; Moravamminacea; Nodosinellacea; Palaeotextulariacea; Parathuraminacea; Ptychocladiacea; Tetrataxacea; Tournayellacea

The Fusulinida is an extinct order within the Foraminifera in which the tests are traditionally considered to have been composed of microgranular calcite. Like all forams, they were single-celled organisms. In advanced forms the test wall was differentiated into two or more layers. Loeblich and Tappan, 1988, gives a range from the Lower Silurian to the Upper Permian, with the fusulinid foraminifera going extinct with the Permian–Triassic extinction event. While the latter is true, a more supported projected timespan is from the Mid-Carboniferous period.

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