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Cyclothyris elegans (VON HANSTEIN, 1879) and Cretirhynchia tenuicostata (VON HANSTEIN, 1879), two valid Lower Maastrichtian rhynchonellid brachiopods from the phosphatic chalk of Ciply, Belgium
Simon, E (1996). Cyclothyris elegans (VON HANSTEIN, 1879) and Cretirhynchia tenuicostata (VON HANSTEIN, 1879), two valid Lower Maastrichtian rhynchonellid brachiopods from the phosphatic chalk of Ciply, Belgium. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 66: 97-108
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
Peer reviewed article  
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Keywords
    Geological time > Phanerozoic > Geological time > Mesozoic > Cretaceous
    Geological time > Phanerozoic > Geological time > Mesozoic > Cretaceous > Cretaceous, Upper > Maastrichtian
    Brachiopoda [WoRMS]; Rhynchonellida [WoRMS]; Rhynchonellidae Gray, 1848 † [WoRMS]
    Belgium, Mons [Marine Regions]
    Marine/Coastal
Author keywords
    Brachiopods, Rhynchonellidae, Cretaceous, Lower Maastrichtian, Ciply, Belgium, Brachiopodes, Crétacé, Maastrichtien Inférieur, Belgique.
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Abstract
    This paper presents an emended description and illustrations of Cyclothyris elegans (VON HANSTEIN, 1879) and of Cretirhynchia tenuicostata (VON HANSTEIN, 1879). Lectotypes have been chosen. This Cyclothyris and this Cretirhynchia are distinct and valid species. Cyclothyris elegans is an uncommon species in the Lower Maastrichtian phosphatic chalk of Ciply [Belemnella obtusa Zone] whereas Cretirhynchia tenuicostata is a much more common species.
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