. Bulletin of the British Museum (Natural History), Geology. FROM BRACKLESHAM BEDS 269 Remarks. Williams & Downie (1966a) described H. eisenacki typically as having small tubules branching off from the large processes. In addition to the typical form of H. eisenacki recorded in this study, some specimens have been observed with both acuminate spines and tubules developed on the large processes. Occurrence. Lower, Middle and Upper Eocene. Previous Records. Lower Eocene of Belgium (De Coninck 1972*), of northern France (Gruas-Cavagnetto 1970b*), of north Germany (Gocht 1969) and of the Hamps
. Bulletin of the British Museum (Natural History), Geology. FROM BRACKLESHAM BEDS 269 Remarks. Williams & Downie (1966a) described H. eisenacki typically as having small tubules branching off from the large processes. In addition to the typical form of H. eisenacki recorded in this study, some specimens have been observed with both acuminate spines and tubules developed on the large processes. Occurrence. Lower, Middle and Upper Eocene. Previous Records. Lower Eocene of Belgium (De Coninck 1972*), of northern France (Gruas-Cavagnetto 1970b*), of north Germany (Gocht 1969) and of the Hampshire and London Basins in southern England (Williams & Downie 1966a) ; Middle and ? Upper Eocene of north Germany (Gocht 1969) ; Upper Eocene of East Prussia (Eisenack 1954, as Hystrichokolpoma cinctum) ; Eocene, undifferenti- ated, of Romania (Baltes, 1969, doubtful attribution) ; Middle Oligocene of north Germany (Gocht 1969).. 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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