. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 193 Genus BUCCELLA Anderson, 1952 Buccella frigida (Cushman) (PI. 18, fig. 13; Text-fig. 42, nos 1-5) Pulvinulina frigida Cushman, 1922 : 12 (co-types not figured). Eponides frigida Cushman, 1931 (part) : 45. Buccella frigida (Cushman) Anderson, 1952 : 144, figs 4a-c, 5, 6a-c; Loeblich & Tappan, 1953 : 115, pi. 22, figs 2, 3; Voorthuysen, 1958 : 32, pi. 24, figs I5a-c; Todd & Low, 1961 : 18, pi. 1, figs 24, 25; Haake, 1962 : 44, pi. 4, figs 3-6; Feyling-Hanssen, 1964 : 337, pi. 1
. Bulletin of the British Museum (Natural History). Zoology . CARDIGAN BAY RECENT FORAMINIFERA 193 Genus BUCCELLA Anderson, 1952 Buccella frigida (Cushman) (PI. 18, fig. 13; Text-fig. 42, nos 1-5) Pulvinulina frigida Cushman, 1922 : 12 (co-types not figured). Eponides frigida Cushman, 1931 (part) : 45. Buccella frigida (Cushman) Anderson, 1952 : 144, figs 4a-c, 5, 6a-c; Loeblich & Tappan, 1953 : 115, pi. 22, figs 2, 3; Voorthuysen, 1958 : 32, pi. 24, figs I5a-c; Todd & Low, 1961 : 18, pi. 1, figs 24, 25; Haake, 1962 : 44, pi. 4, figs 3-6; Feyling-Hanssen, 1964 : 337, pi. 18, figs 15-18. Buccella frigida (Cushman) var. calida Cushman & Cole, 1930 : 98, pi. 13, figs I3a-c; Cushman, 1931 : 47, pi. 10, figs 3, 4; 1944 : 34, pi. 4, figs 19, 20; 1949 : 46, pi. 9, figs ia-c; Parker, 1952b : 450, pi. 5, figs 3a, b. Diagnosis. A biconvex species of Buccella with broadly rounded periphery and generally with raised, rounded dorsal side. Most commonly in what is probably the megalospheric generation, there are 6 : 7 : 3 or 4—, chambers in each whorl following the proloculus. Description. (Text-fig. nos 1-3.) Test biconvex with broad, shallow ventral umbilicus, flattened dorsal side and rounded periphery, apertural face oblique to the equatorial plane, semilobate; with ten chambers in a low, trochoid dextral spiral, 6 : 4—, following the proloculus, gradually but irregularly increasing in size and becoming longer than high and lunate in the second whorl, six visible on the ventral side; dorsal sutures distinct and slightly thickened, curving back to the periphery, slightly impressed in the last whorl, ventral sutures indistinct, radial, impressed; apertures not visible; wall finely perforate, ornamented on the ventral side with small granules that fill the umbilicus and sutural depressions and cover the lower part of the apertural face, coalescing at the centre to give the appearance of a small button- like plug. Dimensions. Maximum diameter 0-20 mm,
Size: 2660px × 939px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
