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Swiss Journal of Palaeontology
Fig. 10 | Swiss Journal of Palaeontology

Fig. 10

From: Kasimovian (late Pennsylvanian) cornute rugose corals from Egypt: taxonomy, facies and palaeogeography of a cool-water fauna from northern Gondwana

Fig. 10

Rotiphyllum exile de Groot, 1963. A1 External lateral view of the corallite RAh (116), showing a slightly curved corallite with a calice largely preserved but compressed. Positions of thin-sections indicated. A2 Transverse thin section at the immature part of the corallite, showing a stereocolumn in the centre. A3–A4 Two successive transverse thin-sections at the early and latest mature stages, showing a long cardinal septum with thin axial end (diagenetically broken in A4). B1 External lateral view of the corallite RAh (117), with partly eroded calice. B2–B4 Successive transverse thin-sections marked in B1, showing the radial to sub-radial arrangement of major septa, the central stereocolumn and the long cardinal septum with a thin axial end. C1–C2 Two successive transverse thin-sections in the mature part of the corallite RAh (21). D1 Transverse thin-section in the immature part of the specimen RAh (46) showing a zaphrentoid arrangement of major septa. D2 Transverse thin-section in the mature part of the corallite, showing a deformed long cardinal septum in a triangular fossula. Black dots indicate the positions of cardinal septum (below), counter septum (above) and the two alar septa

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