FOSSIL ARGONAUTS (MOLLUSCA: CEPHALOPODA: OCTOPODIDA) FROM LATE MIOCENE SILTSTONES OF THE LOS ANGELES BASIN, CALIFORNIA

@inproceedings{Saul2005FOSSILA,
  title={FOSSIL ARGONAUTS (MOLLUSCA: CEPHALOPODA: OCTOPODIDA) FROM LATE MIOCENE SILTSTONES OF THE LOS ANGELES BASIN, CALIFORNIA},
  author={Louella R. Saul and Carol J. Stadum},
  year={2005}
}
Abstract Fossilized argonaut egg cases have been recovered from marine siltstones of the late Miocene exposed around margins of the Los Angeles Basin, California. Low radial ribs on the thin, keelless, planispirally coiled egg cases suggest referring them to Mizuhobaris lepta new species. Occurrence of these egg cases in fine-grained Monterey Formation sediments with mesopelagic fish fossils, nannofossils, and Foraminifera indicate deposition in middle-to-upper bathyal depths. Argonaut egg… 

Fossil Ceratioid Anglerfishes (Teleostei: Lophiiformes) from the Miocene of the Los Angeles Basin, California

Abstract Fossil ceratioid anglerfishes are described from the Upper Miocene (upper Mohnian) deposits of the Puente Formation, Los Angeles Basin, California. The specimens were collected from the

Miocene Argonautidae (Octopoda) from the Persian Gulf area and their palaeogeographic distribution

Cephalopod specimens assigned to the Argonautidae ( Obinautilus pulchra Kobayashi, 1954 and an unknown taxon) from two localities of the Mishan Formation in Gohreh and Khorgu sections, Bandar Abbas,

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Abstract Scaphitid ammonites (scaphites) are common in the Upper Cretaceous Pierre Shale and Bearpaw Shale of the Western Interior of North America. We redescribe Hoploscaphites nodosus (Owen, 1852)

The age of the Oso Member, Capistrano Formation, and a review of fossil crocodylians from California

Fossils from the late Miocene Oso Member of the Capistrano Formation in Orange County, California, are underreported in the scientific literature. Mitigation activities in the Oso Member have

A PAPER NAUTILUS (OCTOPODA, ARGONAUTA) FROM THE MIOCENE PAKHNA FORMATION OF CYPRUS

Abstract:  The fossil organic trace of an argonaut shell from the Pakhna Formation (Serravillian, Middle Miocene) of southern Cyprus is described. The new find represents one of only a very few

Vulnerability of the Paper Nautilus (Argonauta nodosa) Shell to a Climate-Change Ocean: Potential for Extinction by Dissolution

Since the shell was a crucial adaptation for the evolution of the argonauts’ holopelagic existence, persistence of A. nodosa may be compromised by shell dissolution in an ocean-change world.

The argonaut shell: gas-mediated buoyancy control in a pelagic octopus

  • J. FinnM. Norman
  • Environmental Science
    Proceedings of the Royal Society B: Biological Sciences
  • 2010
This major shift in life mode from benthic to pelagic shows strong evolutionary parallels with the origins of all cephalopods, which attained gas-mediated buoyancy via the closed-chambered shells of the true nautiluses and their relatives.

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