Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-23T21:06:46.210Z Has data issue: false hasContentIssue false
  • English
  • Français

III.—A Revision of some Carboniferous Corals1

Published online by Cambridge University Press:  01 May 2009

R. G. Carruthers
R. G. Carruthers
Affiliation:
The Geological Survey
Get access Rights & Permissions [Opens in a new window]

Extract

Corallum conical and, as a rule, gently curved, though often straight; a short broad outline is not uncommon. The epitheca has well-marked longitudinal ribbing, sometimes obscured by fine annular striations in the neighbourhood of the calyx; slight constrictions of growth may occur, but there is never an interrution in the continuity of the epitheca. Good figures are given both by Milne-Edwards & Haime and by de Koninck.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 2 , February 1908 , pp. 63 - 74
Copyright
Copyright © Cambridge University Press 1908

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 63 note 2 In a few rare cases the coral may become cylindrical in the final growth stages and the septa then become amplexiod, retreating from the upper surface of successive tabulæ. The commencement of such a stage is indicated in Pl. V, Fig. 6. A unique specimen from Tournai, now in the Survey collection (R. C. 330), shows this habit. It is 4·5cm. in length, and the cylindrical distal portion measures 2·5 by 1·3cm. No trace of marginal dissepiments appears, either in the longitudinal section or in the calyx. In other species amplexoid septa accompany the acquisition of a cylindrical habit, and fuller reference to the matter will subsequently be given under Caninia cornucopiœ, Mich.

page 64 note 1 It is, however, sometimes lateally disposed, and in one or two rare instances lies distinctly on the convex side of curvature.

page 65 note 2 Ranging probably from the Upper Tournaisian to the Lower Visean.

page 66 note 1 As Dr. Vaughan informs me, the description of Z. aff. Phillipsi in his original paper (Q. J. G. S., vol. lxi, p. 270Google Scholar)is only applicable in its entirety to Z. omaliusi.

page 66 note 2 ”In this work I have received very valuable assistance from Mr. W. H. Wickes, Professor S. H. Reynolds, and Mr. H. F. Barke; Mr. Carruthers has uncomplainingly checked the identification of almost every specimen.”

page 67 note 1 This refers to the recent discovery of Z. delanouei and Densiphyllid Zaphrentids in conjunction at Malahide, co. Dublin.Google Scholar

page 68 note 1 I would regard the minor septa seen in Pl. V, Fig. 1, as having the greatest length attained in Z. konincki, as here defined.

page 69 note 1 Dr. Vaughan has figured an example in his Bristol paper (Q. J. G. S., vol. lxiGoogle Scholar, pl. xxii, fig. 3).

page 70 note 1 Sibly, F., “Carboniferous Limestone of the Mendip Area”: Q.J.G.S., vol. lxii (1906), p. 366.Google Scholar

page 70 note 2 In these notes it should be understood that Z. konincki is equivalent to Z. aff. cornucopiœ of Dr. Vaughan's earlier papers.

page 73 note 1 Geol. Mag., 1907, p.73.

A correction has been issued for this article:

Errata