| Receptaculites Temporal range: 488–250 Ma |
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| Receptaculitid from the Ordovician of Estonia. | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Plantae |
| Division: | Chlorophyta |
| Class: | Ulvophyceae |
| Order: | Dasycladales |
| Family: | Receptaculitidae |
| Genus: | Receptaculites Blainville 1830 |
| Species[1] | |
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Receptaculites was probably a benthic marine calcareous alga of the Order Dasycladales that lived from the Early Ordovician through the Permian. It has a double spiral radiating pattern of rhombus-shaped plates supported by spindle-like objects called meroms. Fossils can usually be identified by the intersecting patterns of clockwise and counterclockwise rows of plates or stalk spaces.