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Notes on Certain Upper Devonian Brachiopods figured by Whidborne

Athyris concentrica von Buch?

Published online by Cambridge University Press:  01 May 2009

F. R. C. Reed
Affiliation:
Genus: Athyris McCoy

Extract

Dehée (1929, p. 26) has pointed out that there has been much confusion and difficulty in distinguishing A. concentrica from A. (Cleiothyridina) roissyi, and Weller (1914, p. 473) referred to Davidson's too broad interpretation of that species. One impression [H. 251] from Poleshill which Whidborne figured (1897, pl. xviii, fig. 3) under the latter name does not possess the characteristic spinosity of A. (Cl.) roissyi, but agrees instead with A. concentrica which is a typical Devonian species characteristic of the Upper Devonian, as Dehée remarks who figures examples of it (1929, p. 26, pl. iv, figs. 4−6) from Etroeungt.

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Copyright
Copyright © Cambridge University Press 1943

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