. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 75 Description. (Text-fig. nos 1-3.) Test ovate, regularly egg-shaped, a little less than one and a half times as long as wide, apex truncated, subtrigonal in section; chambers arranged in a moderately embracing, alternating quinqueloculine spiral, inflated, increasing slowly in size with subrounded periphery tapering to the aperture, four visible at the front, three at the rear, where the fourth chamber (third from last) just peeps through in the centre; sutures indistinct, only slightl


. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 75 Description. (Text-fig. nos 1-3.) Test ovate, regularly egg-shaped, a little less than one and a half times as long as wide, apex truncated, subtrigonal in section; chambers arranged in a moderately embracing, alternating quinqueloculine spiral, inflated, increasing slowly in size with subrounded periphery tapering to the aperture, four visible at the front, three at the rear, where the fourth chamber (third from last) just peeps through in the centre; sutures indistinct, only slightly impressed; wall smooth, vitreous, imperforate porcelaneous; aperture terminal, oval with broad margin and thin lip, tooth a thin, bar-like structure with very short, bifid free margin, rounded summit protruding through and clearly seen in side view. Dimensions. Length 070 mm, maximum width 0-50 mm, thickness 0-36 mm. Material. More than 25 specimens. Variation. More elongate forms occur showing the trend to Q. lata. Depository. () Slide 1970 : 11 : 26 : 115-117. Stubs 1970 : 11 : 26 : 516, 1970 : 11 : 26 : 701, 703, 1970 : 11 : 26 : 755. Slides 1970 : 11 : 26 : 471, 1970 : 11 : 26 : 472. Provenance. Specimen described and others figured and photographed, CB 8. Remarks. This gibbous, vitreous form with its smoothly embracing chambers proved a difficult subject for the stereoscanner which failed to pick out the sutures of specimens presented in side view. Details of the aperture with its exquisite tooth structure are, on the other hand, very well shown (PI. 8, fig. 3).. I L mm Fig. 18, 1-3. Quinqiieloculina seminulum, specimen described. 1, front view; 2, apertural view; 3, rear view; 4, apertural view of rounder 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 (Natur


Size: 2288px × 1092px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll