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STRATI 2013 pp 1045-1048 | Cite as

Stratigraphic and Palaeogeographical Distribution of the Ordovician Eocrinoid Ascocystites Barrande 1887 (Echinodermata, Blastozoa)

  • Yamouna MakhloufEmail author
  • Bertrand Lefebvre
  • Elise Nardin
  • Ahmed Nedjari
  • Serge Régnault
  • Mohamed Ferhi
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

All available data on the stratigraphic range, palaeobiogeographical distribution, and systematics of the blastozoan genus Ascocystites (Echinodermata) are reviewed and discussed. Its stratigraphic extent appears to be limited to the Darriwilian–Sandbian interval. Its palaeogeographical distribution is restricted to high-latitude peri-Gondwanan regions of the Mediterranean Province (Algeria, Bohemia, France, Morocco, and Portugal). Ascocystites is reported herein for the first time in the Darriwilian (Middle Ordovician) of the Central Anti-Atlas, Morocco. The species A. micraster Barrande 1887 and A. barrandei Jaekel 1918 are both reinterpreted as junior synonyms of A. drabowensis Barrande 1887.

Keywords:

Blastozoa Echinodermata Eocrinoidea Gondwana Ordovician Palaeogeography 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Yamouna Makhlouf
    • 1
    Email author
  • Bertrand Lefebvre
    • 2
  • Elise Nardin
    • 3
  • Ahmed Nedjari
    • 1
  • Serge Régnault
    • 4
  • Mohamed Ferhi
    • 1
  1. 1.Faculté des Sciences de la TerreUniversité des Sciences et de la Technologie Houari BoumedieneAlgerAlgeria
  2. 2.UMR CNRS 5276 Laboratoire de Géologie de Lyon, Terre, Planètes, Environnement (LGLTPE), Géode, campus de la DouaUniversité Lyon 1Villeurbanne cedexFrance
  3. 3.UMR CNRS 5563 Géosciences Environnement Toulouse (GET), Observatoire Midi-Pyrénées (OMP)ToulouseFrance
  4. 4.Muséum d’Histoire NaturelleNantesFrance

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