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XXIV.—On Old Red Sandstone Plants showing Structure, from the Rhynie Chert Bed, Aberdeenshire. Part I. Rhynia Gwynne-Vaughani, Kidston and Lang

Published online by Cambridge University Press:  03 November 2011

R. Kidston  and
W. H. Lang
R. Kidston
Affiliation:
Barker Professor of Cryptogamic Botany in the University of Manchester.
W. H. Lang
Affiliation:
Barker Professor of Cryptogamic Botany in the University of Manchester.
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Extract

The chert of the Muir of Rhynie, containing plant-remains, was discovered by Dr W. MACKIE of Elgin while investigating the sedimentary and volcanic rocks of Craigbeg and Ord Hill which occur in that area. The original discovery was made on loose specimens, built into the dykes or scattered over the fields, especially those lying to the north of the road which runs from Rhynie to Cabrach, and east and west of the right-of-way that here connects Windyfield Farm with the public road.

Type
Reprint Series (No. 2): On Old red Sandstone Plants showing Structure, from the Rhynic Chert Bed, Aberdeenshire
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 87 , Issue 3 , 1996 , pp. 427 - 450
Copyright
Copyright © Royal Society of Edinburgh 1996

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References

page 427 note * Mackie, W., “The Hock Series of Craigbeg and Ord Hill, Rhynie, Aberdeenshire,” Trans. Edin. Geol. Soc., vol. x, pp. 205–236, pl. xxii.Google Scholar

page 427 note † Mackie, l.c., pl. xxiii, fig. 5.

page 427 note † Mackie, l.c., pl. xxiii, fig. 6.

page 427 note § Mackie, l.c., p. 223.

page 428 note * The exact horizon of the Rhynie Old Red Sandstone has not yet been definitely determined, but it cannot be younger than the Middle Old Red Sandstone.

page 428 note † The site of this trench is shown on the map (fig. 1) in the Report of the Committee on “The Plant-bearing Cherts at Rhynie, Aberdeenshire,” Brit. Assoc. Rep., 1916, Newcastle MeetingGoogle Scholar.

page 431 note * Such impressions, with or without an evident midrib, according to their preservation, might easily be described as linear leaves or even algæ.

page 431 note † The stems in PL. 11, fig. 5, measured 6 inches, but were incomplete.

page 432 note * The peculiar oval bodies in the cortex of the two lowest rhizomes in fig. 13 are the reproductive organs of saprophytic fungi. The detailed description of the numerous fungi which occur in the deposit is reserved for a future communication, but the reader must allow for their presence in many of the illustrations to this paper.

page 442 note * The primitive nature of the general organisation of the Psilotaceæ is clearly held on other grounds by Bertrand, C. EG. in his Recherches sur les Tmesipteridées, Lille, 1883, pp. 313–316Google Scholar; and by Lignier, in his “Equisétales et Sphénophyllales leur origine filicinéenne commune,” p. 95, Bull. Soc. Linn, de Normandie, 5e sér., vol. vii, 1903, p. 93Google Scholar, Caen.

page 442 note † Geological Survey Canada, Montreal, 1871Google Scholar.

page 443 note * It will be observed that we exclude from Psilophyton princeps Dawson's figures of “rhizomes,” pl. x, figs. 111, 115, 116, and 117. We also exclude at present from Psilophyton all the other species which have been referred to it by DAWSON and other writers, as they do not seem to show the characters necessary for their definite reference to this genus.

page 443 note † The course we adopt is in general agreement with the views of Solm-Ladrach, Fossil Botany, pp. 189-192, and more recently of P. Beetrand, in “Note preliminaire sur les Psilophytons des grès de Matringhen,” Ann. Soc. géol. du Nord, vol. xlii, p. 157, 1913Google Scholar.

page 443 note ‡ L.c., pl. xi, figs. 133 and 134.

page 443 note § L.c., pl. xi, fig. 127.

page 443 note ∥ L.c., p. 37.