Argonauta tokunagai

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.[1]

Undescribed fossil species of Argonauta related to this taxon have been temporarily designated Argonauta cf. tokunagai and Argonauta "tokunagai".[2]

References

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.
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.

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[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.