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Fenestrapora (Fenestrata, Bryozoa) from the Middle Devonian of Germany

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Abstract

Two species of the fenestrate genus Fenestrapora Hall, 1885 are described from the Middle Devonian (middle Eifelian-lower Givetian) of the Rhenish Massif, Germany. The species Fenestrapora transcaucasica Morozova and Lavrentjeva, 1998 is known from the Middle Devonian (Eifelian) of Transcaucasia, Azerbaijan, and from the Middle Devonian (Eifelian) of Sauerland, Germany. One species is new: Fenestrapora tuberculata sp. nov. Numerical statistics were tested for species discrimination of the studied material of three Fenestrapora species from the Lower Devonian of Spain and Middle Devonian of Germany. Discrepancies in the taxonomical and numerical assignment of the studied samples are explained by restriction of the involved characters and their affection by environmental conditions.

Kurzfassung

Zwei Arten der fenestraten Bryozoen-Gattung Fenestrapora Hall, 1885 werden aus dem Mitteldevon des Rheinischen Schiefergebirges beschrieben. Die Art Fenestrapora transcaucasica Morozova and Lavrentjeva, 1998 ist aus dem Mitteldevon (Eifelium) von Transkaukasien (Aserbaidschan) und dem Sauerland (Deutschland) bekannt. Die neue Art Fenestrapora tuberculata sp. nov. wird vorgestellt und beschrieben. Eine numerische statistische Analyse zur Art-Abgrenzung innerhalb des untersuchten Materials (drei Fenestrapora-Arten) aus dem Unter- (Spanien) und Mitteldevon (Deutschland) wurde durchgeführt. Abweichungen in der taxonomischen und numerischen Zuordnung der untersuchten Proben können durch die geringe Anzahl der herangezogenen Merkmale und deren Beeinflussung durch Umweltverhältnisse erklärt werden.

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Acknowledgments

Wolfgang Reimers (Kiel) is thanked for his assistance in preparing the thin sections. The late Robert Leunissen, Wollersheim, and Jan Bohatý, Wiesbaden, are thanked for providing interesting samples and help in the field. Steven Hageman, Boone, is thanked for his useful comments during the work on the manuscript. Patrick Wyse Jackson, Dublin, and Zoya Tolokonnikova, Krasnodar, are appreciated for their helpful and constructive reviews. The Deutsche Forschungsgemeinschaft is thanked for financial support (DFG project ER 278/4.1 and 2). This paper is a contribution to IGCP 596 “Climate change and biodiversity patterns in the Mid-Paleozoic.”

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  1. Institut für Geologie, Universität Hamburg, Bundesstr. 55, 20146, Hamburg, Germany

    Andrej Ernst

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Ernst, A. Fenestrapora (Fenestrata, Bryozoa) from the Middle Devonian of Germany. Paläontol Z 90, 19–32 (2016). https://doi.org/10.1007/s12542-016-0284-x

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