Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-25T06:39:21.590Z Has data issue: false hasContentIssue false

II.—On a Specimen of Psilophyton robustius Dawson, from the Lower Devonian of Canada*

Published online by Cambridge University Press:  11 June 2012

C. A. Hopping
Affiliation:
Department of Botany, University of Glasgow.
Get access

Synopsis

An account is given of the species Psilophyton robustius and the relevant literature is reviewed. There follows an illustrated description of a relatively well-preserved fertile, branched specimen. The morphological features of this specimen are discussed with reference to the earlier descriptions by Dawson and others. It has been found necessary to institute a new genus as Psilophyton is now apparently inappropriate for this species. The name given to this new genus is Trimerophyton, which includes the one species Trimerophyton robustius (Dawson) Hopping.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1956

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.)

Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

References

References to Literature

Bower, F. O., 1935. Primitive Land Plants. London.Google Scholar
Croft, W. N., and Lang, W. H., 1942. “The Lower Devonian flora of the Senni beds of Monmouthshire and Breconshire”, Phil. Trans., Ser. B. 231. 131163.Google Scholar
Dawson, J. W., 1859. “On fossil plants from the Devonian rocks of Canada”, Quart. J. Geol. Soc., 15, 477488.CrossRefGoogle Scholar
Dawson, J. W., 1862. “On the flora of the Devonian Period in North-Eastern America”, Quart. J. Geol. Soc., 18, 296330.CrossRefGoogle Scholar
Dawson, J. W., 1871. “The fossil plants of the Erian (Devonian) and Upper Silurian formations of Canada”, Geol. Surv. Canada, I, 192.Google Scholar
Dawson, J. W., 1882. “The fossil plants of the Erian (Devonian) and Upper Silurian formations of Canada”, Geol. Surv. Canada, 2, 96142.Google Scholar
Goeppert, H. R., 1852. “Fossile Flora des Übergangsgebirges”, Verh. Kais. Leop. Carol. Akad. Naturforsch. Supplem., 22, 1299.Google Scholar
Halle, T. G., 1916. “Lower Devonian plants from Röragen in Norway”, K. Svenska. VetenskAkad. Handl., 57, 146.Google Scholar
Halle, T. G., 1936. “On Drepanophycus, Protolepidodendron, Protopteridium, with notes on the Palæozoic flora of Yunnan”, Palœont. Sinica, Ser. A, I, fasc. 4. 128.Google Scholar
Halle, T. G., 19381940. De Utdöda Växterna. Stockholm.Google Scholar
Kidston, R., 1903. “The fossil plants of the Carboniferous rocks of Canobie, Dumfriesshire, and parts of Cumberland and Northumberland”, Trans. Roy. Soc. Edin., 40, 741833.CrossRefGoogle Scholar
Kräusel, R., and Weyland, H., 1926. “Beiträge zur Kenntnis der Devon flora. II”, Abh. Senckenb. Naturf. Ges., 40, 113155.Google Scholar
Kräusel, R., and Weyland, H., 1930. “Die Flora des deutschen Unterdevons”, Abh. Preuss. Geol. Landestanst, N.F., 131, 192.Google Scholar
Kräusel, R., and Weyland, H., 1932. “Pflanzenreste aus dem Devon. V”, Sonderab. aus Sencken-bergiana, 14, 391406.Google Scholar
Lang, W. H., 1926. “Contributions to the study of the Old Red Sandstone flora of Scotland. Ill, etc.”, Trans. Roy. Soc. Edin., 54, 491521.Google Scholar
Lang, W. H., 1931. “On the spines, sporangia, and spores of Psilophyton princeps Dawson, shown in specimens from Gaspé”, Phil. Trans., Ser. B, 219, 421442.Google Scholar
Lang, W. H., 1932. “Contributions to the study of the Old Red Sandstone flora of Scotland. VIII, etc.”, Trans, Roy. Soc. Edin., 57, 491521.CrossRefGoogle Scholar
Solms-Laubach, H. Graf Zu, 1891. Fossil Botany, being an Introduction to Palœophytology from the standpoint of the Botanist. Oxford.CrossRefGoogle Scholar
Stolley, E., 1925. “Die Psilophyton”, Jahres. Niedersächs. Geol. Ver. Hanover, 18, 112126.Google Scholar
White, D. W. (in Smith and White), 1905. “The geology of the Perry Basin in Southeastern Maine”, Prof. Pap. U.S. Geol. Surv., No. 35, 3584.Google Scholar