Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-08T01:23:13.913Z Has data issue: false hasContentIssue false

Remarks on the Attachment of Dictyonema flabelliforme (Eichw.)

Published online by Cambridge University Press:  01 May 2009

Extract

The specimen to be described is from part of the McKenny Hughes Collection, preserved in the Sedgwick Museum, and was without any indication of horizon or locality. It is a slab of hard, light-grey, spotted shale, containing numerous examples of Dictyonema flabelliforme (Eichwald). The matrix is quite unlike any Dictyonema Shale known to the writer from extra-British localities, and from the general habit of the graptolites, supported by the lithology of the shale, the specimen is considered to be from some locality in Wales. In the view of Dr. G. L. Elles, who has examined the specimen, it may be part of a collection of D. flabelliforme made by McKenny Hughes from the Portmadoc district. A remarkable feature is shown in the proximal ends of three of the rhabdosomes, where the sicula terminates, not in a nema, but in a little tuft of root-like fibres.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1929

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 492 note 1 See Mon. Brit. Dendr. Grapt. (Pal. Soc.), pt. 1, 1927, pp. 18 et seq.Google Scholar

page 494 note 1 Zeits. d.d. geol. Gesell., 1897, vol. xlv, p. 254.Google Scholar

page 494 note 2 Trans. New York Acad. Sci., vol. xiv, 1895, p. 272, pl. xlix.Google Scholar

page 494 note 3 Ann. New York Acad. Sci., vol. xxii, 1912, p. 148, pl. xxi.Google Scholar

page 495 note 1 Cf. Mon. Brit. Dendr. Grapt. (Pal. Soc.), pt. i, 1927, p. 18; and Westergård, Lunds Univ. Årsskr., N.F., Afd. 2, Bd. 5, Nr. 3, p. 58.Google Scholar

page 495 note 2 Zeits. d.d. geol. Gesell., 1897, xlv, p. 254.Google Scholar

page 495 note 3 Geol. Mag., 1928, vol. lxv, fig. 2, p. 341.Google Scholar