The oldest brachymetopid trilobite record from the European peri-Gondwana


Authors: Pereira S, Marques da Silva C, Pires M, Sá AA

Published in: Bulletin of Geosciences, volume 90, issue 3; pages: 543 - 553; Received 5 September 2014; Accepted in revised form 5 March 2015; Online 12 May 2015

Keywords: Radnoria, Aulacopleurida, Queixoperra Member, Upper Ordovician, Portugal,

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Radnoria guyi sp. nov. from the middle Berounian (upper Sandbian/lower Katian, Upper Ordovician) of the Cabeço do Peao Formation, Central Portugal is the best preserved and most completely known Ordovician species of the genus, and the stratigraphically earliest known from European peri-Gondwana. Until now, the oldest record of the genus was from the upper Sandbian?/lower Katian of South China. The new Portuguese record sheds new light on our understanding of the biogeography of Radnoria, suggesting the possibility of a southern high-latitude Gondwanan origin for the genus.


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