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Temporal range: Oligocene – Recent
Paper Nautilus Shell.jpg
Eggcase of Argonauta nodosa, showing the derived double keel of the genus
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Superfamily: Argonautoida
Family: Argonautidae
Tryon, 1879


Argonautidae is a family of cephalopods encompassing the modern paper nautiluses of the genus Argonauta along with several extinct genera of shelled octopods.

All eggcases possessing nodes, ribs, and a double keel, with the exception of those of Kapal batavus, have been assigned to Argonauta. Eggcases lacking these morphological features have been placed in the other Argonautidae genera.[1]

Fossil Argonautidae eggcases have been described from Japan, New Zealand, Sumatra, Europe, and California.[1]


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Further reading

  • (German) Bandel, K. & W.-C. Dullo (1984). Zur Schalenstruktur fossiler und rezenter Argonauta-Gehäuse (Octopoda, Cephalopoda). Natur und Mensch: Jahresmitteilungen der Naturhistorischen Gesellschaft Nürnberg 1984: 33–38.
  • Kaseno, Y. (1955). Neogene Argonautinae from Kahoku-gun, Ishikawa Prefecture, Japan. Kanazawa University, Science Reports 3: 339–344.
  • 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(1–2): 21–34.
  • 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.
  • Lewy, Z. (1996). Octopods: nude ammonoids that survived the Cretaceous-Tertiary boundary mass extinction. Geology 24(7): 627–630. doi:10.1130/0091-7613(1996)024<0627:ONATST>2.3.CO;2
  • Tomida, S., M. Shiba & T. Nobuhara (2006). First post-Miocene Argonauta from Japan, and its palaeontological significance. Cainozoic Research 4(1–2): 19–25.
  • (Japanese) Yanagisawa, Y. (1990). Age of fossil Argonautidae (Cephalopoda) from Hokuriku Province (central Honshu, Japan) based on diatom biostratigraphy. PDF Bulletin of the Geological Survey of Japan 41(3): 115–127.
  • Argonautidae at the Tree of Life Web Project