. Bulletin of the British Museum (Natural History). 126 G. F. ELLIOTT. Fig. 1 Euspondyloporella sp. Oswald's original section, x40. BM(NH) Palaeont. Dept. VI 1063a. reg. no. (Conrad 1970: 70, and personal communication). Oswald's actual section (refigured here, Fig. 1) shows a Triploporella or related genus; the section is oblique and of an individual showing pressure-displacement of the structure, so it is not precisely diagnostic. However, in one of further thin sections now prepared from the small original sample, another dasyclad section (uncrushed) was revealed, showing branches of a diff
. Bulletin of the British Museum (Natural History). 126 G. F. ELLIOTT. Fig. 1 Euspondyloporella sp. Oswald's original section, x40. BM(NH) Palaeont. Dept. VI 1063a. reg. no. (Conrad 1970: 70, and personal communication). Oswald's actual section (refigured here, Fig. 1) shows a Triploporella or related genus; the section is oblique and of an individual showing pressure-displacement of the structure, so it is not precisely diagnostic. However, in one of further thin sections now prepared from the small original sample, another dasyclad section (uncrushed) was revealed, showing branches of a different form (Fig. 2). It seems unlikely that these two sections are of different taxa and they may well be of the same individual. It is stated oi Euspondyloporella duplicata Sokac & Nikler (1973 : 23) that 'the primary [branches] are represented by two forms. In the club-shaped [top] portion of the alga, they are thin and tubular, slightly thickened in the distal part. Below the top, the primary branches consist of a handle occupying \ of the length, and of an elongated egg-shaped thickening occupying | of the total length of the branch'. In the Oswald material, the original section shows the second pattern, and the new section the first. Further evidence for this determination lies in the large number of primary and small number of secondary branches, the spore-packed branches seen (when not replaced by infill calcite) and I 1. 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: 1564px × 1598px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
