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I.—Notes on the Anomalocystidæ, a Remarkable Family of Cystoidea, found in the Silurian Rocks of North America and Britain

Published online by Cambridge University Press:  01 May 2009

Henry Woodward
Henry Woodward
Affiliation:
British Museum.
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Extract

Twenty-two years ago, Mr. E. Billings, F.G.S., the late excellent palæontologist to the Geological Survey of Canada, completed and published Decade iii. of his “Figures and Descriptions of Canadian Organic Remains” (Montreal, 1858), containing an admirable monograph on “the Cystideæ of the Lower Silurian Rocks of Canada,” wherein (at pp. 72–74) he gives a clear and concise account of a very extraordinary fossil Cystidean, with a very poor woodcut figure of one side, the plates of which he clearly describes. To this fossil he gave the name of Ateleocystites Huxleyi. The specimen was obtained from the Trenton Limestone, near Ottawa, Canada. (See our Plate VI. Fig. 1.)

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 5 , May 1880 , pp. 193 - 201
Copyright
Copyright © Cambridge University Press 1880

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References

page 194 note 1 Only the convex side was examined and described by Prof. de Koninck; the concave side yielded no information to its learned investigator, being imperfect.

page 194 note 2 In this it appears I was in error. Mr. Billings did not affirm them to be actually the same species, but only to belong to the same genus; I misread his note to me at the time. M. de Koninck's species should therefore be retained.

page 194 note 3 Referred to by Billings as the “ventral” side.

page 196 note 1 I am only acquainted with one other organism from the Upper Silurian rocks which is similarly ornamented, namely, the plates of Turrilepas.

Future discoveries may possibly enable us to correlate this anomalous Cirripede (?) with our Ateleocystites, but at present we have not the evidence before us for doing so.

[' “Compare the ornamentation of Ateleocystites with the plates of Turrilepas Wrightii, also from the Wenlock Shale and Limestone, Dudley [figured and described by H. Woodward, in the Quart. Journ. Geol. Soc. 1865, vol. xxi. pi. xiv. figs, la to It. See also Geol. Mag. Vol. II. 1865, p. 470 (Woodcut)]. Can it be possible that any actual relationship exists between these two remarkable and aberrant forms ?—H.W.” (Geol. Mag. 1871, Vol. VIII. p. 72.)]

page 200 note 1 See Note by C. Stewart, Esq., F.L.S., Sec. R.M.S., on the microscopic structure of Ateleocystites, etc., at p. 240, unfortunately received too late for insertion here.— Edit. Geol. Mag.

* [Is it possible that the associated plates a. fig. 11, which Prof. Wetherby considers to be “abdominal appendages,” are the plates of Turrilepas? If this were the case, and their association not merely fortuitous, it might prove, not that Ateleocystites was a Crustacean, but that Turrilepas was possibly the peduncle of this anomalous Cystidean! “We commend this point to Prof. Wetherby's consideration.]