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Autecology of the upper jurassic oysternanogyra virgula (defrance)

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Kurzfassung

Die spätjurassische AusterNanogyra virgula ist in feinkörnigen, niedrig-energeti-schen Sedimenten des europäischen Kontinentalmeeres weit verbreitet. Während sie in frühen Jugendstadien auf hartem Substrat aufgewachsen war, lebten Adultformen häufig frei auf weichem, schlammigen Substrat. Diese Interpretation wird durch mehrere morphologische Anpassungen gestützt.

Abstract

The late Jurassic exogyrine oysterNanogyra virgula occurs in fine-grained low-energy sediments of the European epicontinental sea. It is interpreted as having lived cemented to hard substrates during early juvenile stages, but commonly reclining on soft, muddy substrates in the adult stage. This is supported by several morphological adaptations to such a mode of life.

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Fursich, F.T., Oschmann, W. & München Autecology of the upper jurassic oysternanogyra virgula (defrance). Paläont. Z. 60, 65–74 (1986). https://doi.org/10.1007/BF02989423

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