. Bulletin of the Natural Histort Museum. Geology series. LOWER STORM BED' Erymnoceras jarryi (Douvlll6) (21 Eligmus aualites Horizon MADBI FORMATION: Brachiopods abundant, including Somalirhynchia. Microthyridina, Conarosia, Avonithyris, Bihenithyris, Cereithyris, Dissoria, Eurysites Molluscs abundant, especially: Deltoideum, Nannogyra, Actinostreon, Neocrassina, Indogrammatodon, Proconulus. Perisphinctes IP.) sp. indet. (8) Microthyhdina farquharsoni Muir-Wood (105) Modiolus cf. bipartitus (J. Sowerby) Deltoideum delta (Smith) Nannogyra fourtaui (Stefanini) Actinostreon aff. solitaria (J. So
. Bulletin of the Natural Histort Museum. Geology series. LOWER STORM BED' Erymnoceras jarryi (Douvlll6) (21 Eligmus aualites Horizon MADBI FORMATION: Brachiopods abundant, including Somalirhynchia. Microthyridina, Conarosia, Avonithyris, Bihenithyris, Cereithyris, Dissoria, Eurysites Molluscs abundant, especially: Deltoideum, Nannogyra, Actinostreon, Neocrassina, Indogrammatodon, Proconulus. Perisphinctes IP.) sp. indet. (8) Microthyhdina farquharsoni Muir-Wood (105) Modiolus cf. bipartitus (J. Sowerby) Deltoideum delta (Smith) Nannogyra fourtaui (Stefanini) Actinostreon aff. solitaria (J. Sowerby) Neocrassina aff. unilateralis (J. de C. Sowerby) -Echinoids, Daghanirhynchia -Shelly layer Perisphinctes sp. indet. (2) Peltoceratoides sp. indet. (1) Indogrammatodon egertonianus (Stoliczka) Proconulus arabiensis (Newton) Somalirhynchia abundant Indogrammatodon egertonianus (Stoliczka) 'Posidonia' somaliensis Cox Nannogyra fourtaui (Stefanini) Proconulus arabiensis (Newton) NAUTILOID BED, with Paracenoceras meridionale Tintant Ripple marks and 'Iron Pans' Erymnoceras (Douville) (1) UPPER SHUQRA: Somalirhynchia abundant Molluscs abundant, including Eligmus aualites (Stefanini), E. humei (Stefanini) Nannogyra fourtaui (Stefanini) 'Gryphaea'balli (Stefanini) Actinostreon solitaria (J. Sowerby) Ceratomyopsis somaliensis (Weir) Ceratomya cf. wimmisensis (Gillieron) Bucardiomya somaliensis (Cox) B. aubreyi (Douville) MIDDLE SHUQRA: Somalirhynchia appears, also Bihenithyris & Cererithyris Shuqraia, corals and many molluscs, including lAntiquicyprina sp. and INerinella sp. LOWER SHUQRA: Daghanirhynchia characteristic Many Molluscs, including Protocardia (Tendagurium) buckmani (Morris & Lycett) and Homomya cf. gibbosa IJ. Sowerby) Kohlan Formation Fig. 6 Vertical section of tfie Shuqra and Madbi Formations in central Jebel Billum and from km SE of the Al Ma'abir road/river crossing to 1 km eastwards; thicknesses of the Madbi and the Upper Shuqra are taken fr
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Keywords: ., bh, bookcentury1900, bookcollectionbiodiversity, bookleafnumber15
