The Xiphoteuthididae Bather, 1892 (Aulacocerida, Coleoidea)

An Outline Classification
  • Nino Mariotti
  • Johannes S. Pignatti


Problems 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, taxonomic relationships, and geological occurrences of the genera currently included in the family Xiphoteuthididae: Atractites Gümbel, 1861, Breviatractites Mariotti and Pignatti, 1992, Claviatractites Mariotti and Pignatti, 1996, Crassiatractites Mariotti and Pignatti, 1992, Delphinoteuthis Mariotti and Pignatti, 1994, Metabelemnites Flower, 1944, Choanoteuthis Fischer, 1951, and Calliconites Gemmellaro, 1904. The taxonomic status of Choanoteuthis and the supragen- eric attribution of Calliconites remain uncertain.


Diagnostic Character Middle Triassic Outline Classification Zoological Nomenclature Collective Group 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Nino Mariotti
    • 1
  • Johannes S. Pignatti
    • 1
  1. 1.Dipartimento di Scienze della TerraUniversità degli Studi “La Sapienza”RomaItaly

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