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Pyritized internal moulds of articulated shells of the Early Jurassic brachiopod taxon <i>Nannirhynchia pygmaea</i> were found in beds closely below the early Toarcian oceanic anoxic event in the <i>Polymorphum</i> Zone in Portugal. The material allows a detailed study of the outline of the muscle fields, the length and direction of the crura, and the orientation of the cardinalia, which are hitherto undescribed. Three-dimensional reconstructions of articulated shells of <i>N. pygmaea</i>doi:10.5194/fr-15-77-2012 fatcat:c7ugtmryuvhk3jcy7krd2vengi