Izumonauta
From Infogalactic: the planetary knowledge core
| Izumonauta Temporal range: Miocene
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Izumonauta
Kobayashi, 1954
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Izumonauta is an extinct genus of shelled octopods from the Mid to Late Miocene of Japan and New Zealand.[1]
The keels of Izumonauta eggcases lack tubercules and are intermediate in morphology between those of the earlier Obinautilus and later Argonauta.[2]
The New Zealand fossil material was described from the Kapitean Stage (uppermost Miocene).[3]
References
- ↑ Kobayashi, T. (1954). Izumonauta, a new genus of the Argonautinae, with a note on their rare but gregarious fossil occurrence. Japanese Journal of Geology and Geography 25: 21-34.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Marshall, B.A. (1971). Izumonauta (Argonautidae, Cephalopoda, Coleoida) from the Kapitean Stage (Uppermost Miocene) of New Zealand. New Zealand Journal of Geology and Geophysics 14: 288-292.
Further reading
- Yanagisawa, Y. 1990. Age of fossil Argonautidae (Cephalopoda) from Hokuriku Province (central Honshu, Japan) based on diatom biostratigraphy. PDF (1.90 MiB) Bull. Geol. Surv. Japan 41 (3): 115-127.
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