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Swiss Journal of Palaeontology
Fig. 6 | Swiss Journal of Palaeontology

Fig. 6

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

Fig. 6

A Actinophrentis crassithecata n. sp.: (Holotype specimen RAh (57). A1 External view showing a thick walled, slightly curved corallite with septal furrows ornamenting the external wall. Position of thin-sections indicated. A2 Transverse thin-section near the non-preserved apical part, shows thick major septa meeting in the centre and adaxially thinning cardinal septum. A3 Transverse thin-section in the middle part of the corallite, shows major septa meeting in the centre and noticeable fossular breaks. A4 Last adult transverse thin section just below the calice shows septa withdrawn a little from the centre. A5 Details of the external wall of A3. B1, B2 External lateral views of the specimen RAh (11) showing a thick walled, slightly curved corallite with septal furrows and concentric growth lines on the external wall. C Lytvolasma cf. canadense Fedorowski and Bamber, 2001, specimen RAh (66). C1, C2 Transverse thin-section in the middle mature part of the corallite, shows a short cardinal septum and a long counter septum with a rhopaloid axial end. C3 Transverse thin-section in the calice, shows a long counter septum. Scale bars: 2.5 mm, except A2–A5: 2 mm. Black dots indicate the positions of cardinal septum (below), counter septum (above) and the two alar septa

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