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IX.—Stamnostoma huttonense gen. et sp. nov.—a Pteridosperm seed and cupule from the Calciferous Sandstone Series of Berwickshire*

Published online by Cambridge University Press:  30 May 2017

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

Stamnostoma huttonense is a petrified seed assigned to the Lagenostomales. The open upper part of its integument shows no lobes or chambers. The short wide salpinx is inserted within a relatively wide “micropyle” and is partly invaginated into the top of the lagenostome which usually contains pollen. The female gametophyte is known, it has a domed “tent-pole” and three archegonia.

The paired cupules had sixteen or more terminal segments. Abscission scars indicate that four seeds were borne in each cupule though some were abortive. The cupules if preserved as compressions would resemble the genus Calathiops Göpp.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 64 , Issue 9: 1958-1959 “Stamnostoma Huttonense” Gen. ET SP. Nov. — A Pteridosperm Seed and Cupule from the Calciferous Sandstone Series of BerwickShire , 1960 , pp. 201 - 215
Copyright
Copyright © Royal Society of Edinburgh 1960

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Footnotes

*

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

References

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