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Argonauta tokunagai Temporal range: Miocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	Octopoda
Family:	Argonautidae
Genus:	Argonauta
Species:	†A. tokunagai
Binomial name
†Argonauta tokunagai Yokoyama, 1913

Argonauta tokunagai is an extinct species of octopus. It was described in 1913 based on fossil material from the Middle Miocene Huzina Formation of Japan.

Undescribed fossil species of Argonauta related to this taxon have been temporarily designated Argonauta cf. tokunagai and Argonauta "tokunagai".

References

1. Martill, David M.; Barker, Michael J. (2006). "A Paper Nautilus (Octopoda, Argonauta) from the Miocene Pakhna Formation of Cyprus". Palaeontology. 49 (5): 1035–1041. Bibcode:2006Palgy..49.1035M. doi:10.1111/j.1475-4983.2006.00578.x. S2CID 128781244.
2. Yanagisawa, Y. 1990. "Age of fossil Argonautidae (Cephalopoda) from Hokuriku Province (central Honshu, Japan) based on diatom biostratigraphy" (PDF). Archived from the original (PDF) on 2007-09-27. (1.90 MiB) Bull. Geol. Surv. Japan 41(3): 115-127.

• Kobayashi, T. (1956). A palaeo-meteorological interpretation to the occurrence of the Argonautinae in Province Kaga, central Japan. Japanese Journal of Geology and Geography 27(2–4): 93–104.

v t e Argonauta species
Argonauta argo Argonauta bottgeri Argonauta cornuta Argonauta hians Argonauta nodosa Argonauta nouryi Argonauta pacifica Extinct species: Argonauta absyrtus Argonauta itoigawai Argonauta joanneus Argonauta oweri Argonauta sismondai Argonauta tokunagai

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