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II.—On the Palæontology of the Selachian Genus Notidanus, Cuvier

  • A. Smith WoodWard

Extract

Among the Selachians of the existing fauna, there are none of greater interest and higher morphological importance than Notidanus, Cestracion, and the recently-discovered Chlamydoselachus from Japanese seas. These are the solitary survivors of once flourishing types, whose immediate congeners are only known to Biological science through the fragmentary remains preserved in the geological record; and the value of the archaic features they present is even further enhanced by the slight information already acquired regarding the geological distribution of their numerous extinct allies.

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page 205 note 1 Huxley, T. H., “On Ceratodus Forsteri, with Observations on the Classification of Fishes,” Proc. Zool. Soc. 1876, pp. 4045.

page 205 note 2 See excellent figures by Gegenbaur, C., “Das Kopfskelet der Selachier” (1872), plate x.

page 205 note 3 Huxley, T. H., loc. cit. p. 42, fig. 8.

page 206 note 1 In Jordan and Gilbert's “Synopsis of the Fishes of Korth America,” Bull. U. S. National Museum, No. 16 (1883), p. 967.

page 206 note 2 See detailed descriptions of C. Hasse, “Das Natürliche System der Elasmobranchier— Besonderer Theil” (1882), pp. 3952, pls. vi. vii.

page 206 note 3 Loc. cit. p. 50.

page 206 note 4 St. Mivart, G., “Notes on the Fins of Elasmobranchs,” Trans. Zool. Soc. vol. x. (1879), p. 477.

page 206 note 5 Günther, A., “Catalogue of Fishes Brit. Mus,” vol. viii (1870), pp. 397399.

page 207 note 1 Jordan and Gilbert, “Fishes of N. America,” loc. cit., p. 62: and S. Garman, Bull. Essex Institute, vol. xvi. (1884), pp. 56, 57.

page 208 note 1 Münster, , “Beiträge zur Petrefaktenkunde,” pt. vi. (1843), p. 55.

page 208 note 2 A. Oppel, “Der mittlere Lias Schwabens,” Württb, Jahresh. vol. x. (1854), p. 62, pi. i. fig. 1.

page 208 note 3 Tate, and Blake, , “The Yorkshire Lias” (1876), p. 256.

page 208 note 4 This and the other Jurassic homons have been kindly supplied by Mr. Etheridge.

page 209 note 1 Hasse, C., “Natürl. Syst. Elasm.—Besond. Theil,”pp. 51, 52, pl. vii. figs. 23–25.

page 212 note 1 Besides others already named, I have also to thank the following friends and correspondents who have kindly assisted me in the search for Jurassic Notidanidæ:— Mr. E. T. Newton, of Jermyn Street; Mr. T. Roberts, of the Woodwardian Museum, Cambridge; Mr. H. M. Platnauer, of the York Museum; Mr. H. J, Moale, of the Dorset County Museum; and Mr. H. E. Quilter, of Leicester.

page 215 note 1 The lower teeth of N. einereus also exhibit some approach to this character.

page 215 note 2 Garman, S., “A species of Heptranchias supposed to be new,” Bull. Essex Institute, vol. xvi. (1884), pp. 56, 57.

page 215 note 3 Newton, E. T., “On Two Chimsæroid Jaws from the Lower Greensand of New Zealand,” Q. J. Geol. Soc. vol. xxxii. (1876), pp. 329, 330, pl. xxi. figs. 6—9.

page 216 note 1 In addition to Notidanus dentatus, the National Collection also comprises three teeth of Oxyrhina and one of Odontaspis from these beds; the former bear a very close resemblance to the common O. Mantelli of the European Cretaceous, though there are not sufficient materials to establish their identity; and the Odontafpis is indistinguishable from the well-known O. subulata of the same age.

page 217 note 1 In his second paper (1879) Probst confirms his original determination (1858) and suggests that Lawley's fossil probably belongs to N. gigas or N. Meneghinii.

II.—On the Palæontology of the Selachian Genus Notidanus, Cuvier

  • A. Smith WoodWard

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