Nautilus cookanus
| Nautilus cookanum Temporal range: Late Eocene
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| N. cookanum (top) and Aturia | |
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| Species: | N. cookanum
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| Nautilus cookanum Whitfield, 1892
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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.
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