A re-evaluation ofBlayacina Cobbold 1932 andThoralaspis Hupe 1953 (Trilobita: Redlichiida) |
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Authors: | Gerd Geyer |
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Institution: | 1. Institut für Pal?ontologie der Universit?t, Pleicherwall 1, D-8700, Würzburg, Germany
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Abstract: | The monotypic trilobite generaBlayacina andThoralaspis from the late Early Cambrian of the Montagne Noire, Southern France, are revised. Restudy of the type specimens and of new material from the type locality and stratum as well as morphometric measurements strongly support the assumption that both taxa are identical and that morphologic as well as taxonomic differences resulted from tectonic distortion. Thus,Thoralaspis thorali has to be regarded as a subjective junior synonym ofBlayacina miqueli andThoralaspis as a junior synonym ofBlayacina. Its systematic position as a morphologic group aroundLusatiops within the Ellipsocephalidae-Protoleninae is confirmed. |
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