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Fasciculate Disphyllids (Rugosa) from the Early Givetian Trois-Fontaines Formation in Belgium
Coen-Aubert, M. (2008). Fasciculate Disphyllids (Rugosa) from the Early Givetian Trois-Fontaines Formation in Belgium. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 78: 31-50
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
    Rugosa † [WoRMS]; Marine
Author keywords
    Rugose corals, Givetian, Taxonomy, Stratigraphy, Belgium

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  • Coen-Aubert, M., more

Abstract
    Disphyllum caespitosum (GOLDFUSS, 1826), which is the type species of Disphyllum DE FROMENTEL, 1861, D. oekentorpi n. sp. and Coenophyllum groessensi n. gen., n. sp., which is the type species of Coenophyllum n. gen., are described in detail and come from the Early Givetian Trois-Fontaines Formation, on the south side of the Dinant Synclinorium. Both genera are representatives of the family Disphyllidae HILL, 1939. Disphyllum oekentorpi is widely distributed in the upper part of the Trois-Fontaines Formation; it is found at the same level as Argutastrea quadrigemina (GOLDFUSS, 1826) and is locally associated in Hotton with Coenophyllum groessensi. Disphyllum caespitosum has only been collected at the locality of Pondrôme to the east of Givet. In the more eastern area of Marenne and Ménil-Favay, the lower part of the Trois-Fontaines Formation is partly composed of silty limestones; however, these detrital deposits have not been observed in the nearby section of Hotton. As a whole, the Trois-Fontaines Formation belongs to the Polygnathus hemiansatus conodont Zone.

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