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Frasnian carbonate buildups of southern Belgium: the Arche and Lion members interpreted as atolls
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Representants des genres Phillipsastrea d'Orbigny, A., 1849, Billingsastrea Grabau, A.W., 1917 et Iowaphyllum Stumm E.C., 1949 du Frasnien du massif de la Vesdre et de la bordure o...