Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-23T06:09:42.687Z Has data issue: false hasContentIssue false
  • English
  • Français

Oxroadopteris parvus gen. et sp. nov.: a protostelic Lower Carboniferous pteridosperm from Oxroad Bay, East Lothian, Scotland

Published online by Cambridge University Press:  03 November 2011

Albert G. Long
Albert G. Long
Affiliation:
33 Windsor Crescent, Berwick-upon-Tweed, Northumberland TD15 INT, England.
Get access Rights & Permissions [Opens in a new window]

Abstract

Oxroadopteris parvus gen. et sp. nov. is described from a single incomplete curved stem, 12 cm long and 8 mm diameter, having a cylindrical exarch protostele and sparganum outer cortex. Attached are 8 incomplete bifurcate petioles in probably 2/5 phyllotaxy. Each petiole has a swollen base with sclerotic nests. Petiole lengths increase upwards. Each petiolar trace is small, U-shaped in cross-section, bipolar, and divides to form similar smaller bundles in two secondary rachises.

Keywords

bifurcate petiolebipolar leaf-traceCementstone Groupexarch protostelesclerotic nestsparganum cortex
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 75 , Issue 4 , 1984 , pp. 383 - 389
Copyright
Copyright © Royal Society of Edinburgh 1984

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

Barnard, P. D. W. 1959. On Eosperma oxroadense gen. et sp. nov.: a new Lower Carboniferous Seed from East Lothian. ANN BOT 23, 285–96.CrossRefGoogle Scholar
Barnard, P. D. W. 1960a. Calathospermum fimbriatum sp. nov., a Lower Carboniferous Pteridosperm Cupule from Scotland. PALAEONTOLOGY 3, 265–75.Google Scholar
Barnard, P. D. W. 1960b. Studies on some Lower Carboniferous plants from East Lothian. Ph.D. Thesis London University.Google Scholar
Barnard, P. D. W. 1962. Revision of the genus Amyelon Williamson. PALAEONTOLOGY 5, 213–24.Google Scholar
Barnard, P. D. W. and Long, A. G. 1973. On the Structure of a Petrified Stem and some Associated Seeds from the Lower Carboniferous Rocks of East Lothian, Scotland. TRANS R SOC EDINBURGH 69, 91–108.CrossRefGoogle Scholar
Barnard, P. D. W. and Long, A. G. 1975. Triradioxylon—a New Genus of Lower Carboniferous Petrified Stems and Petioles together with a Review of the Classification of Early Pterophytina. TRANS R SOC EDINBURGH 69, 231–249.CrossRefGoogle Scholar
Benson, M. J. 1904. Telangium scottii, a new species of Telangium (Calymmatotheca) showing structure: ANN BOT 18, 161–77.CrossRefGoogle Scholar
Gordon, W. T. 1938. On Tetrastichia bupatides: a Carboniferous Pteridosperm from East Lothian. TRANS R SOC EDINBURGH 59, 351–70.CrossRefGoogle Scholar
Gordon, W. T. 1941. On Salpingostoma dasu: A New Carboniferous Seed from East Lothian. TRANS R SOC EDINBURGH 60, 427–64.CrossRefGoogle Scholar
Kidston, R. 1909. In Scott, D. H.Studies in Fossil Botany, 2 2nd edn, p. 498. London; Adam & Charles Black.Google Scholar
Kidston, R. 1923. Fossil Plants of the Carboniferous Rocks of Great Britain. MEM GEOL SURV G B PALAEONTOL 2, 19.Google Scholar
Long, A. G. 1960a. On the Structure of Calymmatotheca kidstoni Calder (emended) and Genomosperma latens gen. et sp. nov. from the Calciferous Sandstone Series of Berwickshire. TRANS R SOC EDINBURGH 64, 29–44.CrossRefGoogle Scholar
Long, A. G. 1960b. Stamnostoma huttonense gen. et sp. nov. — a Pteridosperm Seed and Cupule from the Calciferous Sandstone Series of Berwickshire. TRANS R SOC EDINBURGH 64, 201–15.CrossRefGoogle Scholar
Long, A. G. 1961. Some Pteridosperm Seeds from the Calciferous Sandstone Series of Berwickshire. TRANS R SOC EDINBURGH 64, 401–19.Google Scholar
Long, A. G. 1962. Tristichia ovensi gen. et sp. nov., a Protostelic Lower Carboniferous Pteridosperm from Berwickshire and East Lothian, with an account of some Associated Seeds and Cupules. TRANS R SOC EDINBURGH 64, 477–89.Google Scholar
Long, A. G. 1976. Calathopteris heterophylla gen. et sp. nov., a Lower Carboniferous Pteridosperm bearing Two Kinds of Petioles. TRANS R SOC EDINBURGH 69, 327–36.Google Scholar
Scott, D. H. 1924. Fossil Plants of the Calamopitys Type, from the Carboniferous Rocks of Scotland. TRANS R SOC EDINBURGH 53, 569–96.CrossRefGoogle Scholar
Zalessky, M. D. 1911. Étude sur l'anatomie du Dadoxylon Tchihatcheffi Goeppert sp. MEM COM GEOL RUSS N S 68, 18–29.Google Scholar