. Bulletin of the British Museum (Natural History), Geology. BRYOZOANS FROM UPPER CRETACEOUS OF ALBERTA, CANADA 19. Figs 5-8 Eokotosokum bicystosum (Allan & Sanderson), L. Maastrichtian, Edmonton Group, Horseshoe Canyon Formation, Drumheller marine tongue; Drumheller area, Alberta. Scanning electron micrographs of uncoated specimens imaged using back-scattered electrons. Fig. 5, TMP (see also Fig. 12); 5A, part of a large colony, x 12; 5B, autozooids, one (centre bottom) with a'regeneration', x 85. Fig. 6, TMP (see also Fig. 9), colony with overgrowths, x 25. Fig. 7, ROM
. Bulletin of the British Museum (Natural History), Geology. BRYOZOANS FROM UPPER CRETACEOUS OF ALBERTA, CANADA 19. Figs 5-8 Eokotosokum bicystosum (Allan & Sanderson), L. Maastrichtian, Edmonton Group, Horseshoe Canyon Formation, Drumheller marine tongue; Drumheller area, Alberta. Scanning electron micrographs of uncoated specimens imaged using back-scattered electrons. Fig. 5, TMP (see also Fig. 12); 5A, part of a large colony, x 12; 5B, autozooids, one (centre bottom) with a'regeneration', x 85. Fig. 6, TMP (see also Fig. 9), colony with overgrowths, x 25. Fig. 7, ROM (a), part of the holotype colony, x 35. Fig. 8, BMNH D57396 (see also Fig. 11); 5A, autozooids and kenozooids near broken edge of colony, x 27; 5B, autozooids showing pustulose cryptocysts, x 80. and intermediate kenozooids lack both gymnocysts and pus- tulose cryptocysts, and possess only basal walls and reduced , vertical walls; abrasion may have accentuated the vestigial 1 morphology of these kenozooids. A second possible source of multilamellar colony growth could be budding from adventi- tious and intermediate type kenozooids. Avicularia are absent. Remarks. The original description of E. bicystosum by Allan & Sanderson (1945) is reasonably accurate but fails to. 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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