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Richmondian Trilobites from Akpatok Island

Published online by Cambridge University Press:  01 May 2009

Ian Cox
Ian Cox
Affiliation:
Sedgwick Museum, Cambridge.
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Extract

The Trilobites, which include one new species, here described were collected by the writer from Akpatok Island 1 in Ungava Bay while on the Oxford Hudson Straits Expedition in 1931. The single species of graptolite found there has already been described 2; in addition to the trilobites, there are brachiopods, corals, crinoids, gasteropods, cephalopods, and ostracods, which still await identification. The following species of trilobites are here recorded: Isotelus iowensis Owen, Megalaspis beckeri Slocom, Illaenus eucentrus Troedsson, Illaenus groenlandicus Troedsson, Bumastus sp., Calymene cf. fayettensis Slocom, Calymene cf. meeki Foerste, Encrinurus sp., Ceraurus horridus Troedsson, Ceraurus tuberosus Troedsson, Ceraurinus icarus (Billings), Ceraurinus daedalus sp. nov., Pterygometopus fredricki Slocom.

Type
Original Articles
Information
Geological Magazine , Volume 70 , Issue 8 , August 1933 , pp. 359 - 373
Copyright
Copyright © Cambridge University Press 1933

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References

page 359 note 1 For a general account of Akpatok Island see Clutterbuck, H. M., Geographical Journal, lxxx, 1932, 211 et seq.Google Scholar

page 359 note 2 Ian, Cox, Geol. Mag., LXX, No. 823, 1933, 1 et seq.Google Scholar

page 359 note 3 This stream has been described by the present writer in the Geol. Mag., LXX, No. 824, 1933, 70 et seq.Google Scholar

page 360 note 1 Raymond, P. E., Bull. Mus. Comp. Zool. Harvard, lviii, No. 5, 1914, 259.Google Scholar

page 360 note 2 Ibid., pl. ii, fig. 6; pl. iii, figs. 1 and 2.

page 360 note 3 Clarke, J. M., Final Rep. Geol. and Nat. Hist. Surv. Minnesota, iii, 1894, fig. 5. This is called I. maximus Locke, but Raymond regards it as a typical I. iowensis.Google Scholar

page 360 note 4 Fr., Schmidt, Mém. de l’Acad. Imp. des Sciences de St.-Pétersbourg, viiie série, xix, No. 10, Taf. viii, fig. 6.Google Scholar

page 360 note 5 Slocom, A. W., Iowa Geol. Surv. XXVth Ann. Rep., 1914, 196.Google Scholar

page 360 note 6 Troedsson, G. F., Med. om Grønland, lxxii, 1928, 29.Google Scholar

page 361 note 1 This paper was reprinted in Iowa Geol. Surv. XXVth Ann. Rep., 1914, Des Moines, 1916, with no change, so far as the references here given are concerned, except in pagination and plate numbers.Google Scholar

page 361 note 2 Slocom, A. W., Iowa Geol. Surv. XXVth Ann. Rep., 1914, pl. xv, fig. 5.Google Scholar

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page 362 note 4 Ibid., 300.

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page 368 note 1 Ibid., 67.

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