| Cyclida Temporal range: (possible Cretaceous records)
| |
|---|---|
| |
| Diagram of Brittaniclus rankini (formerly Americlus rankini) in ventral view | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Superclass: | Multicrustacea |
| Order: | †Cyclida Schram, Vonk & Hof, 1997 |
| Genera | |
|
See text | |
| Synonyms | |
| |
Cyclida (formerly Cycloidea, and so sometimes known as cycloids) is an extinct order of crab-like fossil arthropods that lived from the Carboniferous to the Jurassic and possibly Cretaceous. Their classification is uncertain, but they are generally interpreted as crustaceans, likely belonging to the superclass Multicrustacea.