| Ellesmerocerida Temporal range:
| |
|---|---|
| |
| Life positions of Ellesmerocerida [3] | |
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.[4]
- ^ Cite error: The named reference
Kroger2009was invoked but never defined (see the help page). - ^ Cite error: The named reference
Kroger2007was invoked but never defined (see the help page). - ^ Flower, R.H. (1955). "Saltations in nautiloid coiling". Evolution. 9 (3): 244–260. doi:10.2307/2405647. JSTOR 2405647.
- ^ The Paleobiology Database Ellesmerocerida entry