Conodontes et coraux de la patie supérieure du Frasnien dans la tranchée du chemin de fer de Neuville (Massif de Philippeville, Belgique)

The railway cutting at Neuville (« Massif de Philippeville >», Belgium) has uncovered beds of upper Frasnian age belonging to the Ancyrognathus triangularis and Palmatolepis gigas Zones. They also contain representatives of the genera Phillipsastrea D'ORBIGNY, A., 1849 et Iowaphyllum STUMM, E.C., 1949, of which the interesting stratigraphic distribution is stressed in comparison with the one of contemporary deposits from the Massif de la Vesdre

Reassignment to the Middle Devonian of some rugose corals investigated by LE MAÎTRE (1934) in the Chalonnes Formation from the Southeastern Armorican Massif (France)

Nine taxa of rugose corals collected by LEMAÎTRE (1934) and coming from the Chalonnes Formation of the Southeastern Armorican Massif in France have been revised. They belong to the genera Stringophyllum WEDEKIND, 1922, Sociophyllum BIRENHEIDE, 1962, Acanthophyllum DYBOWSKI, 1873, Beugniesastraea COEN-AUBERT, 1989 and Fasciphyllum SCHLÜTER, 1885. Among this material, Stringophyllum acanthicum (FRECH, 1885), Sociophyllum elongatum (SCHLÜTER, 1881), Acanthophyllum vermiculare (GOLDFUSS, 1826) and A. tortum (TSIEN, 1969) occur close to the Eifelian-Givetian boundary, on the south side of the Dinant Synclinorium in Belgium. Moreover, the first three species have been defined in the Middle Devonian of the Eifel Hills in Germany and they are observed in the Late Eifelian and the Early Givetian of this area. For comparison, A. heterophyllum (MILNE-EDWARDS & HAIME, 1851) and Sociophyllum cf. elongatum sampled by LE MAÎTRE (1934) in the Late Emsian Valet Formation from the Southeastern Armorican Massif have also been investigated. The Belgian material of Stringophyllum acanthicum is included in the systematic description of this taxon

New species of <i>Frechastraea</i> Scrutton, 1968 at the base of the Late Frasnian in Belgium

Frechastraea coeni n. sp. is widely distributed at the base of the Late Frasnian from the Philippeville Massif, the north side of the Dinant Synclinorium, the south side of the Namur Synclinorium and the Vesdre Massif. It occurs within the Early Palmatolepis rhenana conodont Zone and is locally associated with F. glabra n. sp. and F. phillipsastraeiformis (Moenke, 1954). However, F. phillipsastraeiformis, which is also described in this paper, may be already present at the top of the Middle Frasnian from the Philippeville Massif and the south side of the Dinant Synclinorium

Nouvelles sous-espèces de Phillipsastrea hennahi (LONSDALE, W., 1840) dans le Frasnien supérieur de la Belgique

Phillipsastrea hennahi falsa n. subsp. is described from nodular limestones of late Frasnian age in the Philippeville and Visé Massifs. P. hennahi ranciae n. subsp. is described from two bioherms ("red marble" reefs) of the uppermost Frasnian at Rance. The two new subspecies are associated with Frechaslraea pemagona minima (ROZKOWSKA, M., 1953)

Rugueux coloniaux mésodévoniens du Fondry des Chiens à Nismes (Ardenne, Belgique)

The stromatoporoid reef limestone that outcrops in the Fondry des Chiens at Nismes, reaches a thickness of 70 metres and is assigned to the base of the Givetian, by conodonts. It contains rare colonies of Nemphyma dalcqae n. sp. and Fasciphyllum katranicum (GORIANOV, 1968). F. conglomeratum (SCHLÜTER, 1881), type species of Fasciphyllum SCHLÜTER, 1885 has been collected from the Upper Eifelian and the Lower Givetian of Wellin. The relations between the genera Fasciphyllum and Battersbyia MILNE-EDWARDS & HAIME, 1851 are also investigated

Deuxième note sur les Rugueux coloniaux de l’Eifelien supérieur et de la base du Givetien à Wellin (bord sud du Bassin de Dinant, Belgique)

The following species are described herein: _Neomphyma delicata n. sp. and Lyrielasma mutabilis (TSYGANKO,1977) from the Upper Eifelian; _Thamnophyllum schouppei SCRUTTON, 1968 from the top of theEifelian; _Centristela fasciculata TSYGANKO, 1967, Beugniesastraea conili n.sp., Columnaria intermedia n. sp., Neomphyma delicata and Lyrielasmasp. A from the base of the Givetian. Moreover, the correlations between the sections of Wellin and Resteigneemphasize the diachronism present at the base of the Givet Limestone

Fasciculate Disphyllids (Rugosa) from the Early Givetian Trois-Fontaines Formation in Belgium

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

<i>Potyphyllum</i>, a new phillipsastreid genus of rugose corals in the Upper Frasnian of Belgium with precisions about the age of the Petit-Mont Member

The new genus Potyphyllum is erected with Cyathophyllum ananas Goldfuss, 1826 as type species, for which a neotype is selected here from the north side of the Namur Basin. It is a massive pseudocerioid rugose coral like Frechastraea Scrutton, 1968 with rather large corallites, spindle-shaped dilated septa as well as some horseshoe and inner dissepiments. In the Belgian Upper Frasnian, Potyphyllum ananas and P. veserense (Coen-Aubert, 1974) occur mainly in the Upper Palmatolepis rhenana conodont Zone. The latter two coral taxa, together with diverse species of Frechastraea and Phillipsastrea D’Orbigny, 1849, permit dating of the red marble lenses from the Petit-Mont Member which are developed at different levels of the Champ Broquet Formation, in the Dinant Synclinorium. In this lithostratigraphic unit are also incorporated the Neuville and Les Valisettes Members, formerly considered as two separate formations. At the present time, Potyphyllum is only known from Western and Eastern Europe

Réprésentants des genres Sociophyllum BIRENHEIDE, 1962 et Beugniesastrea n. gen. à la base du Calcaire de Givet de Pondrôme et de Resteigne (bord sud du Bassin de Dinant, Belgique)

Spongophyllum kunthi SCHLÜTER, 1880, type species of the genus Beugniesastraea n. gen. has been sampled at the base of the Givet Limestone from Resteigne, with B. parvistella (SCHLÜTER, 1882). In this locality and at Pondrôme, Sociophyllum elongatum (SCHLÜTER, 1881), S. torosum (SCHLÜTER, 1881) and S. birenheidi n. sp. occur in the same level. Four of these taxa characterize the Loogh Formation, at the base of the Givetian from the Eifel Hills in Germany. The Couvinian species Beugniesastraea varia (SCHLÜTER, 1889) is also described

Revision of the genus <i>Frechastraea</i> Scrutton, 1968 (Rugosa) in the Upper Frasnian of Belgium

Frechastraea pentagona (Goldfuss, 1826), type species of Frechastraea Scrutton, 1968, F. minima (Rozkowska, 1953), F. micrommata (Roemer, 1852), F. kaisini (Tsien, 1978), F. cf. tungkanlingensis (Yoh, 1937), F. crassiseptata (Tsien, 1978) and F. limitata (Milne-Edwards & Haime, 1851) occur mainly in the Upper Palmatolepis rhenana conodont Zone. Their stratigraphic distribution is discussed in the Upper Frasnian of Belgium and compared with other areas of Western and Eastern Europe. The Belgian material previously identified as Frechastraea micrastraea (Penecke, 1904) is now assigned to F. crassiseptata. The Champ Broquet Formation is proposed herein to include the Neuville and Les Valisettes Members which were formerly considered as two different formations. The red marble lenses of the Petit-Mont Member are developed at different levels of the Champ Broquet Formation, in the Dinant Synclinorium