. Bulletin of the British Museum (Natural History), Geology. 78 E. F. OWEN Orbirhynchia sp. is well developed; Jeans (1968) called it the Lower Orbirhynchia Bed. Bower & Farmery attached a great deal of importance to the existence of two bands in their Beds V-IX, the Lower and Upper Pink Bands occurring above the Totternhoe Stone. The Lower Pink Band is the more fossiliferous and contains Grasirhynchia martini, Kingena concinna and Tereb- ratulina ornata (Roemer) (described here as Terebratulina imbricata sp. nov., p. 148). The presence of large numbers of T. ornata suggested to these auth
. Bulletin of the British Museum (Natural History), Geology. 78 E. F. OWEN Orbirhynchia sp. is well developed; Jeans (1968) called it the Lower Orbirhynchia Bed. Bower & Farmery attached a great deal of importance to the existence of two bands in their Beds V-IX, the Lower and Upper Pink Bands occurring above the Totternhoe Stone. The Lower Pink Band is the more fossiliferous and contains Grasirhynchia martini, Kingena concinna and Tereb- ratulina ornata (Roemer) (described here as Terebratulina imbricata sp. nov., p. 148). The presence of large numbers of T. ornata suggested to these authors that the Lower Pink Band could be called the T. ornata Subzone. Wright & Wright (1942) recorded many Terebratulina from the Lower Pink Band in Yorkshire. A burrowed erosion surface at the top of Bed IX is overlain by Bed X, a conglomerate at the base followed by the laminated marls of the Black Band, both of Neocardioceras juddi Zone, Upper Cenomanian, age. The conglomerate is highly fossiliferous and contains Monticlarella jefferiesi, Orbirhynchia multicostata and Ornatothyris sp., a brachiopod assemblage referred to by Jefferies (1963) who concluded that it characterized the upper part of the Plenus Marls. Northern Ireland Upper Cretaceous sediments outcrop around the margins of the Antrim basalt plateau, but Cenomanian deposits are restricted to the south-east in Co. Antrim. Here they consist of a series of sands forming part of the Hibernian Greensands extending from south of Belfast to Portmuck, north of Island Magee. The stratigraphy has been revised by McGugan (1957), Reid Portmuck. Cave Hill 5 Miles Fig. 7 Sketch-map showing the major outcrops of Cenomanian rocks in the Belfast area and Co. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(
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