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VI.—On Phillipsastræa, d'Orb., with Especial Reference to Phillipsastræa radiata, S.-Woodward sp., and Phillipsastræa tuberosa, M‘Coy, sp

Published online by Cambridge University Press:  01 May 2009

Rudolph Schäfer
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Extract

The genera Phillipsastræa and Smithia have long been a source of trouble to palæontologists, and since the establishment of the latter genus in 1851, it has been very doubtful in which of the two genera certain species of Corals should be placed. The more extended our acquaintance with the species belonging to both genera became, the more probable it seemed that the distinctions between them were in reality unimportant and insufficient to justify a division into two different genera. It was in fact proposed by Kunth as early as 1870 that both genera should be united under the earlier name Phillipsastræa. It has been stated that Phillipsastræa possesses a columella, while Smithia has none; upon the truth of this statement the retention of the two genera depends. Kunth has denied the existence of such a difference. Nevertheless both genera are still retained. From a careful study of the specimens in the British Museum (Natural History) and in the Woodwardian Museum at Cambridge, I have come to the conclusion that Kunth's opinion is well founded; and in the following remarks I shall further attempt to show that certain species which are still sometimes described as having a true columella do not really possess one.

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 9 , September 1889 , pp. 398 - 409
Copyright
Copyright © Cambridge University Press 1889

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References

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page 398 note 2 This date is not correct, because though d'Orbigny's manuscript was ready for publication in the year 1847, as he states in the preface, yet the book was not published until 1849.

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page 402 note 2 M‘Coy, Brit. Pal. Foss. pl. iii.B, figs. 9, 9a, 9b.

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page 402 note 4 M‘Coy, Brit. Pal. Foss. pl. 3B, figs. 9a, 9b.—M. Edwards and J. Haime, Brit. Foss. Cor. pl. 37, fig. 2a.—J. Thomson, loc. cit. pl. iv. figs. 1, 1a.

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page 409 note 1 The above-mentioned structure is very well shown in a specimen, lent me by Dr. Hinde, for which kindness I owe him my best thanks.