. Bulletin of the British Museum (Natural History), Geology. FROM GREAT BRITAIN AND FRANCE 277. Fig. 20. Meiourogonyaulax staffinensis sp. nov. a. General appearance and the apical archaeopyle of the holotype. Left, ventral view ; right, dorsal view. xc. 1320. b. Tabulation (the apical plates are lost in the archaeopyle formation), xc. 1320. and sulcus are characteristically marked by deep furrows. The cingulum is slightly helicoid, laevorotatory, the sulcus broads towards the antapex. The shell surface is densely granular, sometimes tuberculate. Holotype. BM(NH) slide ¥.53620(1). Shale from 1
. Bulletin of the British Museum (Natural History), Geology. FROM GREAT BRITAIN AND FRANCE 277. Fig. 20. Meiourogonyaulax staffinensis sp. nov. a. General appearance and the apical archaeopyle of the holotype. Left, ventral view ; right, dorsal view. xc. 1320. b. Tabulation (the apical plates are lost in the archaeopyle formation), xc. 1320. and sulcus are characteristically marked by deep furrows. The cingulum is slightly helicoid, laevorotatory, the sulcus broads towards the antapex. The shell surface is densely granular, sometimes tuberculate. Holotype. BM(NH) slide ¥.53620(1). Shale from 100 ft. above the second dolerite sill, Staffin Bay, Skye (SS 627). Dimensions. Holotype : overall length (apex lacking) 50 /z, breadth 55 ii ; crests 3-8 /a high ; cingulum c. 6 /x broad. Range of the English specimens (7 specimens measured) : overall length (apex lacking) 48-80 /x, breadth 50-78 tt ; French specimens (6 specimens measured) : overall length (apex lacking) 65-75 ti,. 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(NH)
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