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II.—On the Gault Aporrhaïdæ

Published online by Cambridge University Press:  01 May 2009

J. Starkie Gardner
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Extract

Group 4.—Spire moderately long, generally without carinæ, always ribbed transversely. Wing expanded and quadrate, prolonged posteriorly into a sharp point.

Type
Original Articles
Information
Geological Magazine , Volume 2 , Issue 5 , May 1875 , pp. 198 - 203
Copyright
Copyright © Cambridge University Press 1875

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References

1 Geol. and Nat. Hist. Repertory, 1865.