Ellesmerocerida
| Ellesmerocerida Temporal range: | |
|---|---|
| Life positions of Ellesmerocerida | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Superorder: | †Plectronoceratoidea |
| Order: | †Ellesmerocerida Flower, 1950 |
| Subgroups | |
The Ellesmerocerida is an extinct order of primitive cephalopods belonging to the subclass Nautiloidea with a widespread distribution that lived during the Late Cambrian and Ordovician.