. Bulletin of the British Museum (Natural History). . Fig. 117 Ceriopora farringdonensis Gregory, BM(NH) 10298, holotype; 117A, x 48; 117B, autozooecia, some with diaphragms, x 148; 117C, edge of overgrowth, x 36; 117D, incomplete brood chamber, x 32. (reregistered from 55111; figd Gregory 1909a: pi. 5, fig. 3), Cunnington Colin; D7291 (figd Gregory 1909a: pi. 5, fig. 4), Sharp Colin; D37735, Ellis Colin (one of four specimens mentioned by Gregory (1909a: 191) as Heteropora keepingi, and re-registered from D7169); D57587, Little Coxwell Pit, Whiteley Colin; D57588-9 and D57590 (3 thi
. Bulletin of the British Museum (Natural History). . Fig. 117 Ceriopora farringdonensis Gregory, BM(NH) 10298, holotype; 117A, x 48; 117B, autozooecia, some with diaphragms, x 148; 117C, edge of overgrowth, x 36; 117D, incomplete brood chamber, x 32. (reregistered from 55111; figd Gregory 1909a: pi. 5, fig. 3), Cunnington Colin; D7291 (figd Gregory 1909a: pi. 5, fig. 4), Sharp Colin; D37735, Ellis Colin (one of four specimens mentioned by Gregory (1909a: 191) as Heteropora keepingi, and re-registered from D7169); D57587, Little Coxwell Pit, Whiteley Colin; D57588-9 and D57590 (3 thin sections). Little Coxwell Pit, Pitt Colin; D57585, Little Coxwell Pit, Wise Colin; D57586, Wright Colin; D57591-2, Little Coxwell Pit, Davis Colin. Description. Zoarium of variable form: massive, peduncu- late with tuberous lobes (Fig. Ill) or dendroid; massive zoaria arc up to 50 mm across, branches of dendroid zoaria up to 27 mm in diameter. Overgrowths arc commonly developed; the calcareous laminae (Fig. 117C) which occlude apertures over parts of colony surfaces appear related to intrazoariai overgrowths. Maculae are not generally visible although irregularly arranged monticule-like elevations mav occur (Fig. 1I7A). Zooecial apertures arc monomorphic but very variable in size, and are subcircular to polygonal in shape. Diaphragms may occur a little beneath the level of the colony surface (Fig. 117B). Brood chambers are preserved as depressions, 2-3 mm across, on the surface of zoaria. Autozooecia. linked by septum-like radial walls, apparently pierce brood chambers (Fig. 117D). Complete roofs have not been observed in hand specimen, and the ooeciopore is consequently unknown. In section, branches of dendroid zoaria have thin-wailcd endozones and coaxial exozones. Zooecial walls in the exozone are moniliform and have an apparently granular microstructure with occasional dark patches. Brood chambers are seen to have thin, pseudoporous roofs, and their cham- bers (up to 3 mm
Size: 2430px × 1028px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
