Back المغزليات Arabic Fuzulinidalar AZ Fusulínids Catalan Fusulinida German Fusulinida Spanish Fusuliniidid ET Fusilinida French Ֆուզուլինիդ HY Fusulinidae Italian フズリナ Japanese
| Fusulinida Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | SAR |
| Phylum: | Retaria |
| Subphylum: | Foraminifera |
| Class: | Globothalamea (?) |
| Order: | †Fusulinida |
| Superfamilies | |
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Archaediscacea | |
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.