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I.—Contributions to our knowledge of the Genus Cyclus, from the Carboniferous Formation of various British Localities

Published online by Cambridge University Press:  01 May 2009

Henry Woodward
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Extract

The curious little shield-like Crustaceans, known under the generic name of Cyclus, were first noticed by de Koninckin1841, and have been subsequently figured and described by various authors, but their exact systematic position lias never been clearly understood owing to the absence of appendages or other indications by which their affinities might be satisfactorily ascertained.

In 1868 I gave a description, with figures, of two species:' one of which, the Cyclus radialis, had been previously noticed by de Koninck and Phillips; the other, C. Bankini, was then first made known.

In 1870, under the title of “Contributions to British Fossil Crustacea,” I redescribed the above-named species, and added Cyclus bilobatns, C. torosus, C. Jonesianus, C. Wriyhtii, C. Harknetsi, C. (Halicyne) laxus, C. (Halicyne) agnotus.

The next record of the genus is to be found in the fifth part of my Monograph of British Fossil Crustacea of the order Merostomata, which records and figures the then known seven British species of Cyclus, but adds no new forms.

In 1883 Mr. B. N. Peach, F.K.S., L. and E., F.G.S., published an account of Cyclus testudo, from the Carboniferous series of Langholm, to which reference will again be made later on.

In 1893 I noticed a new British species of Cyclus, discovered by Mr. George Scott in the "Gannister seam" of the Lower Coal-measures, Old Clough Colliery, Bacup, Lancashire, which I named Cyclus Scotti.

In the same year Mr. F. E. Cowper Eeed, B.A., F.G.S., of Trinity College, Cambridge, gave a description of what he deemed to be probably a new species of Cyclus, from the Carboniferous Limestone of Settle, Yorkshire, near to, but not identical with, C. Harhiessi, which he named V. Woodwardi.

Type
Original Articles
Information
Geological Magazine , Volume 1 , Issue 12 , December 1894 , pp. 530 - 539
Copyright
Copyright © Cambridge University Press 1894

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References

page 530 note 1 British Association Reports, Norwich, 1868, 4th Report on Fossil Crustacea, pp. 72–75, pl. ii. figs. 1 and 2.Google Scholar

page 530 note 2 de Koninck, L. G., Descript. des Animaux Foss. Terr. Carb. de Belg. Liége, 1842, p. 591, pl. lii.Google Scholar

page 530 note 3 Phillips, J., Geol. Yorksh. vol. ii. p. 240, t. xxii. fig. 25, 1829.Google Scholar

page 530 note 4 GEOL. MAG. 1870, Vol. VII. Pl. XXIII. Figs. 1-7, pp. 554–560.Google Scholar

page 530 note 5 5, These last-named species are not British, and had been previously described by Prof. Hermann von Meÿer, in the Palaeontographica, 1847, vol. i. p. 134, under the genus Halicyne.Google Scholar They are from the Muschelkalk of EottweilinGermany. Goldfuss originally figured Halicyne as Olenus serotinus (Petrefactenkunde),Google Scholar afterwards von Münster referred it to Limulus (Beitrage, 1841, Bd. i. t. v. f. 1).Google Scholar

page 530 note 6 Palseontographical Society, 1878, vol. xxxii. pp. 248–255, pl. xxxii. figs. 42–49.Google Scholar

page 530 note 7 See Trans. Roy. Soc. Edinburgh, 1883, vol. xxx. pl. xxviii. figs. 9-9d, p. 227.Google Scholar

page 530 note 8 See GEOL. MAG. 1893, Decade III. Vol. X. (Woodcuts A, B), p. 28.Google Scholar

page 530 note 9 Ibid. pp. 64-66 (with a Woodcut).

page 532 note 1 Purchased by the British Museumin1886.

page 532 note 2 Trans. Roy. Soc. Edinburgh, 1883, vol. xxx. p. 511, pl. xxviii. figs. 9 and 9a, b, c, d.Google Scholar

page 533 note 1 See GEOL. MAG. 1893, Dec. III. Vol. X. footnote, p. 29.Google Scholar

page 533 note 2 See note, p. 482, on globular calcite, on a new species of Eurypterus from Eskdale, by Woodward, H., GEOL. MAO. 1887, Dec. III. Vol. IV. pp. 481–484, pl. XIII.CrossRefGoogle Scholar