Lambeoceras
| Lambeoceras Temporal range: Upper Ordovician | |
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| Family: | Lambeoceratidae |
| Genus: | Lambeoceras Foeste, 1917 |
Lambeoceras is a genus of large actinocerids with a convexly lenticular cross section from the Upper Ordovician of North America and the sole representative of the family Lambeoceratidae.