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Paläontologische Zeitschrift

, Volume 82, Issue 3, pp 314–323 | Cite as

A new scolenaspidid (Osteostraci, Vertebrata) from the Lower Devonian of Podolia, Ukraine

  • Anders Carlsson
  • Henning Blom
Article

Abstract

Anew osteostracan genus and species,Victoraspis longicornualis n. gen., n. sp., is described based on material from Rakovets’, present day Ukraine. This new taxon shares characters with the two generaStensiopelta Denison, 1951 andZychaspis Janvier, 1985. A phylogenetic analysis supports the position ofVictoraspis as the sister group to a monophyleticStensiopelta, while the interrelationships of the various species ofZychaspis are poorly resolved. A morphometric analysis is carried out in an attempt to further resolve the taxonomic affinity. This analysis groups all examinedZychaspis species closely together, and further supports the establishment ofVictoraspis as separate genus.

Keywords

Lower Devonian Osteostraci Victoraspis Scolenaspididae Podolia phylogenetics morphometrics 

Kurzfassung

Eine neue Gattung und Art von Osteostracen,Victoraspis longicornualis gen. et sp. nov., wird anhand von material aus Rakovets’, Ukraine, beschrieben. Das neue Taxon zeigt übereinstimmende Merkmale mit den beiden GattungenStensiopelta Denison, 1951, undZychaspis Janvier, 1985. Eine phylogenetische Analyse bestätigt die Stellung von Victoraspis als Schwestergruppe der monophyletischen GattungStensiopelta, während die Verwandtschaftsverhältnisse der verschiedenen Arten vonZychaspis unklar sind. Zur weiteren Klärung der taxonomischen Ähnlichkeiten wurde zudem eine morphometrische Analyse durchgeführt. Diese Analyse gruppierte alle Arten vonZychaspis zusammen und unterstützt somit weiterhin die Identifikation vonVictoraspis als eigenständige Gattung.

Schlüsselwörter

Unter-Devon Osteostraci Victoraspis Scolenaspididae Podolien Phylogenie Morphometrie 

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Copyright information

© E. Schweizerbart’sche Verlagsbuchhandlung 2008

Authors and Affiliations

  • Anders Carlsson
    • 1
  • Henning Blom
    • 1
  1. 1.Department of Physiology and Developmental Biology, Subdepartment of Evolutionary Organismal Biology, Norbyvagen 18AUppsala UniversityUppsalaSweden

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