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VI.—On the Cupule Structure of Eurystoma angulare*

Published online by Cambridge University Press:  06 July 2012

Albert G. Long
Albert G. Long
Affiliation:
Berwickshire High School, Duns.
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Synopsis

Three cupules of Eurystoma angulare are described; they bear one, six, and ten attached ovules respectively. The cupules are built up of several terete branches which dichotomise in successive planes at right angles. Where an ovule is borne a small number of dichotomies are adnate basally so forming an ovuliferous syntelome.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 66 , Issue 6 , 1965 , pp. 111 - 128
Copyright
Copyright © Royal Society of Edinburgh 1965

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References

References to Literature

Barnard, P. D. W., 1960. “Calathospermum fimbriatum sp. nov., A Lower Carboniferous Pteridosperm Cupule from Scotland,” Palœontology, 3, 265.Google Scholar
Long, A. G., 1960 a. “Stamnostoma huttonense gen. et sp. nov.—a Pteridosperm seed and cupule from the Calciferous Sandstone Series of Berwickshire”, Trans. Roy. Soc. Edin., 64, 207.Google Scholar
Long, A. G., 1960 b. “On the structure of Samaropsis scotica Calder (emended) and Eurystoma angulare gen. et sp. nov., Petrified Seeds from the Calciferous Sandstone Series of Berwickshire”, Trans. Roy. Soc. Edin., 64, 269.Google Scholar
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Walton, J., 1949. “Calathospermum scoticum—An Ovuliferous Fructification of Lower Carboniferous Age from Dunbartonshire”, Trans. Roy. Soc. Edin., 61, 719.CrossRefGoogle Scholar