Nautilus cookanum
| Nautilus cookanum Temporal range: Late Eocene | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Nautilida |
| Family: | Nautilidae |
| Genus: | Nautilus |
| Species: | N. cookanum |
| Binomial name | |
| Nautilus cookanum Whitfield, 1892 | |
Nautilus cookanum is an extinct species of nautilus. It lived during the Eocene epoch. N. cookanum has been grouped into a single taxon together with extant species based on their shared shell characters.[1] Fossils of the species from the Late Eocene Hoko River Formation are noted as one of the two oldest occurrences for the genus.[2]
References
- ↑ Ward, P.D. & W.B. Saunders 1997. Allonautilus: a new genus of living nautiloid cephalopod and its bearing on phylogeny of the Nautilida. Journal of Paleontology 71(6): 1054–1064.
- ↑ Ryoji, W. et al. (2008). "First discovery of fossil Nautilus pompilius (Nautilidae, Cephalopoda) from Pangasinan, northwestern Philippines". Paleontological Research 12 (1): 89–95. doi:10.2517/1342-8144(2008)12[89:FDOFNP]2.0.CO;2.