Paläontologische Zeitschrift

, Volume 77, Issue 2, pp 323–340 | Cite as

New trepostome Bryozoa from the Early Triassic (Smithian/Spathian) of Nevada

  • Priska Schäfer
  • Roger J. Cuffey
  • Albert R. Young 


Two new bryozoan species of the trepostome family Dyscritellidae,Dyscritellopsis thaynesianus n. sp. andDyscritellopsis montelloensis n. sp., are described from the Early Triassic (Smithian/Spathian) Thaynes Limestone, Nevada (USA). The bryozoan fauna documents the survival of Paleozoic lineages into the earliest Triassic on northern open shelves outside the tropics. The fauna holds paleobiogeo-graphic connections to the Early Triassic bryozoan faunas of Spitsbergen.


Trepostomata Smithian/Spathian Northeast Nevada Thaynes Limestone systematics paleobiogeography mass extinction survivors. 


Zwei neue Bryozoen-Arten der Familie Dyscritellidae (Trepostomata),Dyscritellopsis thaynesianus n. sp. undDyscritellopsis montelloensis n. sp., werden aus den Thaynes Kalken der unteren Trias (Smithian/Spathian) von Nevada (USA) beschrieben. Die Bryozoen-Fauna liefert weiteren Beleg für das Überleben paläozoischer Stammlinien in frühest triadischer Zeit auf den offenen Schelfen der Nordhemisphere außerhalb der Tropen. Sie zeigt paläobiogeo-graphische Beziehungen zu Faunen der Unteren Trias von Spitsbergen.


Trepostomata Smithium/Spathium Nordost Nevada Thaynes Kalke Systematik Paläobiogeographie Überlebende 


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Copyright information

© E. Schweizerbart’sche Verlagsbuchhandlung 2003

Authors and Affiliations

  • Priska Schäfer
    • 1
  • Roger J. Cuffey
    • 2
  • Albert R. Young 
    • 3
  1. 1.Institut für GeowissenschaftenKiel UniversitätKielGermany
  2. 2.Department of GeosciencesPennsylvania State UniversityUniversity ParkUSA
  3. 3.613 Urban CourtGoldenUSA

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