. Bulletin of the British Museum (Natural History), Geology. £SOZOIC CHRYSALIDINIDAE OF MIDDLE EAST 145. gs 91-94 Paravalvulina arabica (Henson); specimens which have lost part or all of their outer chamber walls; from Qatar, Well Dukhan-2, 14375-4380 ft depth, Hauterivian. Fig. 91, BMNH P 52634, terminal view (breadth 1,620 urn), x 50, with umbilical-apertural flap partly broken, showing internal, umbilical pillars. Fig. 92, BMNH P 52635, oblique-axial view (breadth 1,080 urn), x 70, showing umbilical pillars between the cribrate apertural pores in the umbilical-apertural flaps. Fig. 93, BMNH
. Bulletin of the British Museum (Natural History), Geology. £SOZOIC CHRYSALIDINIDAE OF MIDDLE EAST 145. gs 91-94 Paravalvulina arabica (Henson); specimens which have lost part or all of their outer chamber walls; from Qatar, Well Dukhan-2, 14375-4380 ft depth, Hauterivian. Fig. 91, BMNH P 52634, terminal view (breadth 1,620 urn), x 50, with umbilical-apertural flap partly broken, showing internal, umbilical pillars. Fig. 92, BMNH P 52635, oblique-axial view (breadth 1,080 urn), x 70, showing umbilical pillars between the cribrate apertural pores in the umbilical-apertural flaps. Fig. 93, BMNH P 52636, axial view (length 1,100 urn), x 80; showing 'main chambers free of pillars (which fill the inner, umbilical area). Fig. 94. BMNH P 52637, axial view (length urn), x 60, of specimen from which the chambers, themselves, have been eroded, leaving only the intensely pillared umbilical regions of successive 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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