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Mediterranean representatives of the obolellidTrematobolus Matthew (Brachiopoda) and a review of the genus

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Zusammenfassung

Drei neue Arten der Obolelliden-GattungTrematobolus Matthew,T. splendidus, T. serotinus undT. cleidrius, aus tief-mittelkambrischen Schichten von Marokko werden errichtet. Zusätzliche Beschreibungen und Diskussionen behandeln informell beschriebenes Material derselben Gattung bzw. Familie und die spanische ArtT. simplex. T. bicostatus aus Sibirien wird als eigenständige Art angesehen. Die morphologischen Besonderheiten wie auch die spezifischen Merkmale einiger Arten vonTrematobolus werden diskutiert. Dazu gehört insbesondere die Frage nach einem funktionellen Anus und einer gelenkigen Verbindung der Klappen. Überlegungen und Neubewertungen der Vorkommen führen zu einer Revision der stratigraphischen Reichweite von wichtigen Arten der Gattung.

Abstract

Three new species of the obolellid genusTrematobolus Matthew,T. splendidus n.sp.,T. serotinus n. sp., andT. cleidrius n. sp., from the Middle Cambrian of Morocco are introduced. Additional descriptions and discussions deal with informal material belonging to the same genus and family, respectively, and with the Spanish speciesT. simplex. T. bicostatus from Siberia is raised to specific level. The morphologic characteristics as well as specific significance of several species ofTrematobolus are discussed together with their bearing on functional considerations as of a functional anus and an articulating mechanism. Reconsideration of stratigraphic occurrences of key taxa ofTrematobolus updates the knowledge of the distribution of this genus.

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Authors and Affiliations

  1. Institut für Paläontologie, Universität Würzburg, Pleicherwall 1, D-97070, Würzburg

    Gerd Geyer

  2. Katedra biologie, Pedagogická Fakulta, Zápodočeská, Univerzita v Plzni, Klatovská 51, CZ-306 19, Plzeň

    Michal Mergl

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  1. Gerd Geyer
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  2. Michal Mergl
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Geyer, G., Mergl, M. Mediterranean representatives of the obolellidTrematobolus Matthew (Brachiopoda) and a review of the genus. Paläont. Z. 69, 181–211 (1995). https://doi.org/10.1007/BF02985984

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