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A new species of the genus Besania Brough 1939 from the Middle Triassic of Canton Grisons (Switzerland) with a discussion of the phylogenetic status of the taxon

Eclogae Geologicae Helvetiae volume 98, pages 113–122 (2005)Cite this article

An Erratum to this article was published on 01 August 2005

Zusammenfassung.

Bei Ausgrabungen in der Mittleren Trias der Prosanto-Formation (Ladin, Kanton Graubünden, Schweiz) wurde u.a. neues Fossilmaterial der Gattung Besania Brough 1939 zu Tage gefördert. Bei den neuen Exemplaren konnten morphologische Merkmale identifiziert werden, die eine deutliche Abgrenzung zur Typusart Besania micrognathus Brough 1939 darstellen und die Errichtung einer neuen Art, Besania schaufelbergeri nov. sp., erlauben. Die Identifizierung einiger morphologischer Details macht zudem eine überarbeitung der systematischen Stellung der Gattung Besania notwendig. Die Gattung wird nunmehr an die Basis der Halecostomi (sensu Patterson 1973) gestellt.

Abstract.

Recent excavations in the Middle Triassic Prosanto Formation (Ladinian, Ct. Grisons, Switzerland) have produced new material of the genus Besania Brough 1939. These specimens show many previously unrecorded details. Some features differ from those of the type species Besania micrognathus, and we therefore erect a new species, Besania schaufelbergeri sp. nov. This new material has prompted a re-evaluation of the phylogenetic interrelationships of the genus. The taxon seems to be closely related to basal Halecostomi.

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Authors and Affiliations

  1. Schopenhauerstr. 5, D-39108, Magdeburg, Germany

    Annette Herzog

  2. Naturmuseum St. Gallen, Museumstr. 32, CH-9000, St. Gallen, Switzerland

    Toni Bürgin

Authors
  1. Annette Herzog
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  2. Toni Bürgin
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Correspondence to Toni Bürgin.

Additional information

Manuscript received August 15, 2004 Revision accepted March 15, 2005

An erratum to this article is available at http://dx.doi.org/10.1007/s00015-005-1169-2.

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Herzog, A., Bürgin, T. A new species of the genus Besania Brough 1939 from the Middle Triassic of Canton Grisons (Switzerland) with a discussion of the phylogenetic status of the taxon. Eclogae geol. Helv. 98, 113–122 (2005). https://doi.org/10.1007/s00015-005-1153-x

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  • DOI: https://doi.org/10.1007/s00015-005-1153-x

Key words.

  • Besania schaufelbergeri sp. nov.
  • morphology
  • phylogeny
  • Ladinian
  • Prosanto Formation
  • Switzerland