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I.—Notes on the Palæontology of Western Australia

Published online by Cambridge University Press:  01 May 2009

H. A. Nicholson  and
George J. Hinde
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Extract

The specimen here figured is a typical example of Actinostroma clathratum. In all its general characters, and particularly in the regular development of the radial pillars and the presence of small astrorhizas, it resembles the specimens from the Middle Devonian of Germany, which may be regarded as the normal form of the species. Very similar examples, however, occur in the Devonian Limestones of Devonshire. The surface of the specimen is not shown, being concealed beneath a crust of Stromatoporella Eifeliensis.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 5 , May 1890 , pp. 193 - 204
Copyright
Copyright © Cambridge University Press 1890

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References

page 195 note 1 , full, in allusion to the way in which the corallum is filled up by stereoplasm.

page 195 note 2 Nouvelles Recherches sur les Animaux fossiles du terrain Carbonifère de la Belgique, p. 58.

page 195 note 3 For example, the main characteristic of Pentaphyllum is stated to be the possession of five prominent septa, but in the figure of the unique typical species, P. armatum (l.c. pl. iv. fig. 8a.), six are clearly shown; whilst in the only specimen of the other species included by De Koninck in this genus, P. caryophyllatum, there are but four prominent septa (l.c. pl. iv. fig. 9).

page 196 note 1 British Fossil Corals, Pal. Soc. 1850, p. lxvi. Polyp, foss. des terr. pal. p. 351, pl. i. figs. 2, 2a.

page 196 note 1 Manual of Pal. 3rd ed. vol. i. p. 296.

page 200 note 1 Manual of Palæontology, third edition, vol. i. p. 352.

page 200 note 2 Die Stämme des Thierreichs, p. 324.