Results 151 to 160 of about 828 (171)
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On the Turonian origin of the Goniocamax-Belemnitella stock (Cephalopoda, Coleoidea)
Geobios, 2012Abstract A new subgenus within the genus Goniocamax, Progoniocamax nov. subgen., is described. It includes the Late Turonian-Early Coniacian species “Actinocamax” surensis Naidin and Actinocamax intermedius Arkhangelsky. The new subgenus represents a transition between the genera Praeactinocamax and Goniocamax.
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Callovian and Oxfordian (Jurassic) teuthids (Coleoidea, Cephalopoda) from Chile
Journal of Paleontology, 2016AbstractColeoid specimens from the Jurassic of northern Chile are included in two different species ofTrachyteuthis, i.e.,T. covacevichiFuchs and Schultze, 2008 andT. chilensisn. sp., and in a new genus and a new species,Pseudoteudopsis perezin. gen. n. sp. The specimens described and figured are from two different areas in northern Chile.
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Siphuncular structure in the Jurassic belemnitidMegateuthis(Cephalopoda: Coleoidea)
GFF, 2014Each septum of the phragmocone in the Jurassic belemnitid Magateuthis is composed of a thick, lamello-fibrillar, nacreous layer and a thin, chitinous layer, here termed the additional chitinous layer, which covers the aboral surface of the septum. The nacreous and additional chitinous layers continue from the septum into the septal neck.
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The Xihpoteuthididae Bather, 1892 (Aulacocerida, Coleoidea). An outline classification.
1999Problems in the classification of the Xiphoteuthididae have been recently addressed (Mariotti and Pignatti, 1992, 1994, 1996; Pignatti and Mariotti, 1996), but a critical revision is still lacking, owing mainly to their incomplete fossil record. The following outline of a classification summarizes diagnostic characters, taxonomie relationships, and ...
MARIOTTI, Nino, PIGNATTI, Johannes
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Analyse microstructurale ďunAulacoceras (Mollusca — Coleoidea) juvénile du Trias de Turquie
Paläontologische Zeitschrift, 1982Der Fund eines juvenilenAulacoceras mit Protoconch, Phragmokon und Rostrum wird morphologisch und mikrostrukturell beschrieben. Da die morphologischen Merkmale zu indifferenziert sind, wurden der systematischen Bestimmung die mikrostrukturellen Daten zugrunde gelegt.
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ORIGIN, EVOLUTION, AND BEHAVIOR OF PALEOZOIC AND MESOZOIC COLEOIDEA
Geological Society of America Abstracts with Programs, 2020Christian Klug, Dirk Fuchs
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Chapter 16 Mollusca: Cephalopoda (Coleoidea)
Geological Society, London, Special Publications, 1967D. T. Donovan, J. M. Hancock
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