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Article: Foliomena fauna (Brachiopoda) from the Upper Ordovician of Sardinia

Publication: Palaeontology
Volume: 45
Part: 2
Publication Date: March 2002
Page(s): 267 295
Author(s): Enrique Villas, Wolfgang Hammann and David A. T. Harper
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How to Cite

VILLAS, E., HAMMANN, W., HARPER, D. A. T. 2002. Foliomena fauna (Brachiopoda) from the Upper Ordovician of Sardinia. Palaeontology45, 2, 267–295.

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The late Ordovician brachiopod assemblage from Sardinia is one of the youngest members of the deep-water Foliomena fauna and is characterized by the following core taxa: Christiania, Cyclospira, Dedzetina and Foliomena. The fauna also contains Epitomyonia, Leangella, Glyptorthis and Skenidioides, which are more typical of shallower-water environments during the late Ordovician but occupied deeper-water niches during the Silurian following the termination of the Foliomena fauna. The suprafamilial placement of the family Chrustenoporidae is discussed and the new species Dedzetina serpaglii and Leangella (Leangella) fecunda are established. In common with many mid-Ashgill Foliomena faunas the Sardinian assemblage shows significant differences from other faunal developments of this type, reflecting its geographical position and shallower water conditions than those of the classic early Ashgill Foliomena faunas. The brachiopods occur with abundant trilobites belonging to a variant of the cyclopygid fauna. The faunas developed on part of a complex of microcontinents derived from peri-Gondwana during the Ordovician.
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