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IV.—On a New Species of Diplacantbus, with Remarks on the Acanthodian Shoulder-Girdle

Published online by Cambridge University Press:  01 May 2009

R. H. Traquair
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Extract

Many years ago, and before I entered on my duties in the Edinburgh Museum, the late Mr. C. W. Peach pointed out to me a specimen in the Hugh Miller Collection, which he was inclined to consider as new. It was a Cromarty nodule with dislocated remains, including a dorsal and a pectoral spine, of what was apparently a Diplacanthns of unusual size.

Type
Original Articles
Information
Geological Magazine , Volume 1 , Issue 6 , June 1894 , pp. 254 - 257
Copyright
Copyright © Cambridge University Press 1894

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References

page 254 note 1 See my paper, “The Causes of the Variation in the Composition of Igneous Rocks,” Nat. Science, vol. iv. 02 1894.Google Scholar

page 256 note 1 Since the above has been in type, I have seen in specimens of Climatius, preserved in the British Museum, clear evidence that in this genus the bone in question is furnished with an internal tubular hollow, as in other Acanthodei.

page 257 note 1 In the substance of this bone there seem to be no vascular canals. Reis (Zur Kenntniss des Skelets der Acanthodinen. Geognostische Jahrbücher, 1890, pp. 27 et seq.) describes and figures dentine tubules, but these were not observed by Fritsch, who describes the structure as consisting entirely of closely superimposed laminas (Fauna der Gaskohle und der Kalksteine der Permformation Böhmens, Bd. iii. Heft 2, pp. 54, on).Google Scholar