| Diceras Temporal range: From Jurassic to Cretaceous,   | |
|---|---|
|   | |
| Fossil Diceras angulatum from Jurassic at Galerie de paléontologie et d'anatomie comparée, Paris | |
|  Scientific classification   | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Bivalvia | 
| Order: | † Hippuritida | 
| Suborder: | † Hippuritidina | 
| Superfamily: | † Radiolitoidea | 
| Family: | † Diceratidae | 
| Genus: | † Diceras  Lamarck, 1805  | 
| Species | |
See text.  | |
Diceras is an extinct genus of fossil saltwater clams, marine heterodont bivalve molluscs. These bivalves were stationary epifaunal suspension feeders.
Species within the genus Diceras:
Fossils of species belonging to this genus have been found in the Cretaceous of France and in the Jurassic of Croatia, Czech Republic, France, Germany, Morocco, Poland, Romania and Slovenia.