Published online by Cambridge University Press: 01 May 2009
The fossils described in the following pages were collected by Mr. James L. Begg, The Elms, Mount Vernon, Glasgow, fromthe Poolvash Limestone, Balladoole, Isle of Man. The fauna of these limestones, according to Dr. Wheelton Hind, indicates an upper Dibunophyllum age. The most recent and most complete list of Carboniferous Limestone fossils from the south of the I.O.M. is that published by Mr. John Smith, and compiled from the Survey list, from Dr. Hinde's list, and from Cuming's list, as well as from Mr. Smith's own collection.
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page 433 note 2 Trans. Geol. Soc. Glasgow, xiv, part 2, 1911, p. 149.Google Scholar
page 433 note 3 A stouter shell than Pt. pyramidalis; spiral angle 61°.Google Scholar
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page 434 note 1 Loc. cit., viii, 1883, p. 90, pl. xxxii bis, figs. 28–31, and pl. xxxiii bis, figs. 15–17.Google Scholar
page 435 note 1 “Fauna de' Calloari con Fusulina della Valle del Fiume Sosio,” Gionale di Scienze Naturale di Palermo, xx, 1890, p. 102, pl. xix, figs. 31–33.Google Scholar
page 435 note 2 As defined by Macdonald, and Trueman, , Quart. Journ. Geol. Soc., lxxvii, 1921, p. 302. The term “splral angle” is open to the objection that it is also used for the constant angle of a logarithmic splral, and has already been used in that sense by Dr. Trueman with reference to the splral coiling of Gryphaea (Geol. Mag., LIX, 1922, p. 260). “The splral angle” of a gastropod is not homologous with the angle which expresses the umbonal curvature of Gryphaea. Custom, however, probably justifies the retention of the term in the special sense of its application to gastropods.Google Scholar
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page 435 note 4 Bigsby, J. J., 1878. Thesaurus Devonico-Carboniferus, p. 329.Google Scholar
page 435 note 5 Loc. cit., viii, p. 10.Google Scholar
page 437 note 1 Maedonald, and Trueman, , loc. cit., pp. 306–307.Google Scholar
page 437 note 2 Loc. cit., vi, 1881, p. 84, pl. ix, figs. 32, 33.
page 438 note 1 De Verneuil, , 1845, Russia and the Ural Mountains, ii, p. 341, pl. xxiii, fig. 5.Google Scholar