. Bulletin of the British Museum (Natural History), Geology. 404 VISEAN FENESTRATE BRYOZOA bryozoa from the Carrick Lough residues. Faunas from different collecting hori- zons were at first treated separately, and careful sorting led in each case to the establishment of groups of specimens with a common basic morphology. Further examination showed the presence of an almost identical range of groups in the five collections, which were, therefore, amalgamated. From each of the enlarged mor- phological groups a sample of between 7 and 30 (generally about 20) of the largest and best preserved frag

- Image ID: RGHTW2
. Bulletin of the British Museum (Natural History), Geology. 404 VISEAN FENESTRATE BRYOZOA bryozoa from the Carrick Lough residues. Faunas from different collecting hori- zons were at first treated separately, and careful sorting led in each case to the establishment of groups of specimens with a common basic morphology. Further examination showed the presence of an almost identical range of groups in the five collections, which were, therefore, amalgamated. From each of the enlarged mor- phological groups a sample of between 7 and 30 (generally about 20) of the largest and best preserved frag
Book Worm / Alamy Stock Photo
Image ID: RGHTW2
. Bulletin of the British Museum (Natural History), Geology. 404 VISEAN FENESTRATE BRYOZOA bryozoa from the Carrick Lough residues. Faunas from different collecting hori- zons were at first treated separately, and careful sorting led in each case to the establishment of groups of specimens with a common basic morphology. Further examination showed the presence of an almost identical range of groups in the five collections, which were, therefore, amalgamated. From each of the enlarged mor- phological groups a sample of between 7 and 30 (generally about 20) of the largest and best preserved fragments was selected for detailed examination. On each specimen of a sample twelve measurements were made for each of twelve variables. The mean or mode (depending on the variate) of each series was regarded as the representative datum for a specimen (Tavener-Smith 1966b : 414, 421), and from these basic measurements sample statistics were computed. These provide a quanti- tative statement of the morphological characteristics of a sample, and a basis for objective comparison with others of a similar nature. Where possible specimens of a sample were identified with already established species and, in such cases, the. Fig. 4. Diagram showing dimensions measured for biometric purposes, ap.d., apertural diameter; aps.per fen., number of zooecial apertures per fenestrule; br.w., branch width; diss.w., dissepiment width; f.l., fenestrule length; f.w., fenestrule width; i.ap.d., inter- apertural distance; i.n.d., intemodal distance.. 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 work.. British Museum (Natural History). London : BM(NH)

Search stock photos by tags


Similar stock images