. Bulletin of the British Museum (Natural History), Geology. 256 DINOFLAGELLATE CYSTS AND ACRITARCHS Sulcus is short and broad. The precingular archaeopyle forms through loss of the plate 3". Surface of the shell finely granular. Figured specimen. BM(NH) slide ¥.53969(1). Clay from top of the Gres de Chatillon, south of Audresselles, Boulonnais (CC 450). Dimensions. Figured specimen : overall length 62 it, breadth 55 /x ; horn length 7 ix. Other French specimens (15 specimens measured) : overall length 62-80 /x, breadth 55-65 /x; horn length 6-7 /x. Range of the English specimens (2 speci
. Bulletin of the British Museum (Natural History), Geology. 256 DINOFLAGELLATE CYSTS AND ACRITARCHS Sulcus is short and broad. The precingular archaeopyle forms through loss of the plate 3". Surface of the shell finely granular. Figured specimen. BM(NH) slide ¥.53969(1). Clay from top of the Gres de Chatillon, south of Audresselles, Boulonnais (CC 450). Dimensions. Figured specimen : overall length 62 it, breadth 55 /x ; horn length 7 ix. Other French specimens (15 specimens measured) : overall length 62-80 /x, breadth 55-65 /x; horn length 6-7 /x. Range of the English specimens (2 specimens measured) : overall length 68-73 p, breadth 70-72 /x ; horn length 6-8 /x. (Dimensions of the type material : length 66 /x, breadth 63 /x ; horn length 9 /x.) Remarks. Klement has recorded G. granulata from the Upper Jurassic (Lower Oxfordian to Upper Kimmeridgian) of Germany. It is present in the Dorset and Boulonnais assemblages. The specimens from these localities correspond closely in general morphology to the German material, differing only in details of the shape of plates 1', 3' and 1" '.. 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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