. Bulletin of the British Museum (Natural History), Geology. 6o CALCAREOUS ALGAE OF THE MIDDLE EAST (Palaeocene) of Bekhme, Erbil Liwa ; thin-section material from the Sinjar Forma- tion (Palaeocene-Lower Eocene) of Banik, Mosul Liwa, and from the Kolosh Forma- tion (Palaeocene-Lower Eocene) of Sedelan, Sulemania Liwa ; all in northern Iraq. Remarks. Pagodaporella is the fossil record of a little, thick- branched dasyclad which calcified only near the stem-cell, at the base of the branches, no traces being left of branch-structure nor of sporangia : its relationships are therefore uncertain. T
. Bulletin of the British Museum (Natural History), Geology. 6o CALCAREOUS ALGAE OF THE MIDDLE EAST (Palaeocene) of Bekhme, Erbil Liwa ; thin-section material from the Sinjar Forma- tion (Palaeocene-Lower Eocene) of Banik, Mosul Liwa, and from the Kolosh Forma- tion (Palaeocene-Lower Eocene) of Sedelan, Sulemania Liwa ; all in northern Iraq. Remarks. Pagodaporella is the fossil record of a little, thick- branched dasyclad which calcified only near the stem-cell, at the base of the branches, no traces being left of branch-structure nor of sporangia : its relationships are therefore uncertain. The peculiar thin-section appearance, with more gaps than skeleton, was known for some time before the discovery of solid specimens, which when sectioned led to the elucidation of the random sections. The living Dasydadiis {D. clavaeformis (Roth) Ag. ; Mediterranean) shows a comparable limited calcification which is however not identical. Here each verticil shows 10-15 branches, branched outwardly to the third degree and also bearing sporangia : the primaries narrow markedly at their inner junctions with the stem- cell, and between their points of insertion the fleshy stem-cell wall is markedly thickened inwardly, within the stem-cell itself, and thinly calcified 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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