. Bulletin of the British Museum (Natural History). 80 PITT AND TAYXOR. Figs 25-26 Oncousoecia depressa (d'Orbigny, sensii Canu & Bassler). apparently obscured by calcite cement), x 48. Fig. 26, BM(NH) Material. BM(NH) D55313, Little Coxwell Pit, Gaster Colin; D57430, Little Coxwell Pit, Pitt Colin. USNM 69483 (figd by Canu & Bassler, 1926: pi. 27, figs 5-6). Description. Zoaria are encrusting, initially uniserial but becoming oligoserial, with somewhat flabellate branches, 2-3 zooecia wide, which bifurcate frequently. Branches are rela- tively fiat and low. Autozooecia are m
. Bulletin of the British Museum (Natural History). 80 PITT AND TAYXOR. Figs 25-26 Oncousoecia depressa (d'Orbigny, sensii Canu & Bassler). apparently obscured by calcite cement), x 48. Fig. 26, BM(NH) Material. BM(NH) D55313, Little Coxwell Pit, Gaster Colin; D57430, Little Coxwell Pit, Pitt Colin. USNM 69483 (figd by Canu & Bassler, 1926: pi. 27, figs 5-6). Description. Zoaria are encrusting, initially uniserial but becoming oligoserial, with somewhat flabellate branches, 2-3 zooecia wide, which bifurcate frequently. Branches are rela- tively fiat and low. Autozooecia are moderately large but of variable size, with slightly convex frontal walls visible for most of their length. Apertures are circular or longitudinally elliptical and widely spaced, and peristomes are little raised. Gynozooecia (Fig. 25B) have small, inverted pear-shaped distal frontal walls and a transversely elongate ooeciopore. Measurements. LAM, 011-0-15 mm; TAM, 0-12-0 I5 mm; FWL, 0-86-1-07 mm; FWW, 0-21-0-30 mm; GW, 0-50 mm; GDL, 110 mm; TOSM, 0 08 mm; LOSM, 0 04 mm; TOPM, 0-04 mm; LOPM, 0-03 mm. Remarks. D'Orbigny (1850, 1853) described a species from the Neocomian of France which Canu & Bassler (1926) later identified from Faringdon under the name Proboscina depressa. 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)
Size: 1194px × 2094px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
