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XIII.—A new interpretation of Lepidodendron calamopsoides Long and Oxroadia gracilis Alvin

Published online by Cambridge University Press:  06 July 2012

Albert G. Long
Albert G. Long
Affiliation:
Hancock Museum, Newcastle upon Tyne.
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Synopsis

A petrified lycopod found in a loose block of calciferous sandstone from the Cementstone Group in Berwickshire possesses a rooting stem-base similar to others previously assigned to Lepidodendron calamopsoides (Long 1964) but it shows continuity with a dichotomously branched stem about 15 cm. long, lacking leaves, but otherwise resembling Oxroadia gracilis (Alvin 1965). The diagnosis of Lepidodendron calamopsoides has been emended to include only axes bearing lepidodendroid leaf cushions as previously described. The new specimen, and others with like roots are tentatively assigned to Oxroadia gracilis Alvin.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 68 , Issue 13 , 1971 , pp. 491 - 506
Copyright
Copyright © Royal Society of Edinburgh 1971

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References

References to Literature

Alvin, K. L., 1965. “A new fertile lycopod from the Lower Carboniferous of Scotland”, Palaeontology, 8, 281–293.Google Scholar
Beck, C. B., 1958. “Levicaulis arranensis gen. et sp. noy., a Lycopsid Axis from the Lower Carboniferous of Scotland”, Trans. Roy. Soc. Edinb., 63, 445–457.Google Scholar
Bower, F. O., 1908. The Origin of a Land Flora, 306–7. London.Google Scholar
Bower, F. O., 1935. Primitive Land Plants, 265. London.Google Scholar
Calder, M. G., 1934. “Notes on the Kidston Collection of Fossil Plant Slides: No. VI, On the Structure of Two Lepidodendroid Stems from the Carboniferous Flora of Berwickshire”, Trans. Roy. Soc. Edinb., 58, 118–134.Google Scholar
Heer, O., 1859. Flora Tertiaria Helvetiae, III, 169, Taf. 149. Zurich.Google Scholar
Lacey, W. S., 1962. “Welsh Lower Carboniferous plants. I. The flora of the Lower Brown Limestone in the Vale of Clwyd, North Wales”, Palaeontographica, B 111, 125–160.Google Scholar
Lele, K. M. & Walton, J., 1962. “Fossil Flora of the Drybrook Sandstone in the Forest of Dean, Gloucestershire”, Bull. Br. Mus. Nat. Hist., 7, 137–152.Google Scholar
Long, A. G., 1964. “A petrified Lower Carboniferous Lepidodendron showing rooting organs identified with Calamopsis Solms-Laubach”, Trans. Roy. Soc. Edinb., 66, 35–48.Google Scholar
Phillips, T. L. & Leisman, G. A., 1966. “Paurodendron, a rhizomorphic Lycopod”, Am. J. Bot., 53, 1086–1100.Google Scholar
Richter, R. & Unger, F., 1856. “Beitrag zur Paläontologie des Thüringer Waldes”, Denkschr. Akad. Wiss., Wien, 11, 172–173, and Taf. VIII, fig. 18.Google Scholar
Schlanker, C. M. & Leisman, G. A., 1969. “The herbaceous Carboniferous Lycopod Selaginella fraiponti comb, nov.”, Bot. Gaz., 130, 35–41.Google Scholar
Scott, D. H. & Hill, T. G., 1900. “The structure of Isoëtes hystrix”, Ann. Bot., 14, 413–454.Google Scholar
Solms-Laubach, H. Graf Zu., 1896. “Ueber die seinerzeit von Unger beschriebenen strukturbietenden Pflanzenreste des Unterculm von Saalfeld in Thüringen”, Abh. Preuss. Geol. Landesanst., 23, 1–100.Google Scholar
Webster, T. R. & Steeves, T. A., 1963. “Morphology and development of the root of Selaginella densa Rydb”, Phytomorphology, 13, 367–376.Google Scholar
Webster, T. R. & Steeves, T. A., 1964. “Developmental morphology of the root of Selaginella kraussiana A.Br. and Selaginella wallacei Hieron”, Can. J. Bot., 42, 1665–1676.Google Scholar
Webster, T. R. & Steeves, T. A., 1967. “Developmental morphology of the root of Selaginella mertensii Spring”, Can. J. Bot., 45, 395–404.Google Scholar