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Published online by Cambridge University Press: 01 May 2009
Sp. char.—Shell (cast) discoidal, somewhat inflated, rather rapidly increasing. Whorls somewhat inflated, very convex on the periphery, less convex on the sides, rounded near the umbilicus. Umbilicus moderately wide, occupying nearly one-third of the diameter of the shell. Number of whorls and amount of inclusion unknown. Height of outer whorl rather more than one-third of the diameter of the shell. Each whorl ornamented with ahout 20 short, thick, umbilical ribs, each of which commences at the suture, extends radially or with a very slight forward inclination over one-fourth of the width of the lateral area, and terminates in a radially elongated tubercle.
page 433 note 1 Not Ammonites Woodwardi, Seeley, H. O., Ann. Mag. Nat. Hist. [3], vol. xvi. 1865, p. 236, pl. xi. f. 3, which probably belongs to the section Hoplites, Neumayr.Google Scholar
page 434 note 1 Trans. Geol. Soc. [2], vol. vii. 1847, p. 197Google Scholar, pl. xxiii. f. 2. Pavlow, (Bull. Soc. Imp. Nat. Moscow, N.s. vol. v. 1892, p. 493) places this species in a division (Astieria) of Neumayr's genus Olcostephanus.Google Scholar
page 434 note 2 Min. Con. vol. iii. p. 168, pl. ccxciii. 1821.Google Scholar
page 435 note 1 Quart. Journ. Geol. Soc. vol. xxvi. (1870), pl. XV. f. 4.Google Scholar
page 435 note 2 Min. Con. vol. ii. p. 233, pl. 202, both figs. [Brit. Mus. No. 43906],Google Scholar
page 435 note 3 Min. Con. vol. iv. p. 71, pl. 351 [Brit. Mus. No. 43905].Google Scholar
page 435 note 4 Min. Con. vol. v. p. 162, pl. 500, f. 2.Google Scholar
page 435 note 5 Pal. Franç. Terr. Jur. vol. i. pl. 136.Google Scholar
page 435 note 6 Pal. Franç. Terr. Jur. vol. i. pl. 141.Google Scholar
page 436 note 1 Min. Con. vol. ii. p. 189, pl. clxxxiv. A, fig. 3.Google Scholar
page 436 note 2 Pal. Franç. Terr. Jur. i. p. 403, pl. 137, ff. 3, 4 (non ff. 1, 2, 5).Google Scholar
page 436 note 3 Ueber die Zone des Ammonites Sowerbyi, Geogn.-pälaont, Benecke's. Beiträge, vol. i. p. 605.Google Scholar
page 436 note 4 Pal. Franç. Terr. Jur. i. p. 403, pl. 137, ff. 1, 2 (non ff. 3, 4).Google Scholar
page 437 note 1 Pal. Mittheil. p. 279, pl. lxxviii. figs. la, b; 2a, b.Google Scholar
page 437 note 2 Ibid. p. 161, pl. 1. figs. 3a, b.
page 437 note 3 Pal. Franç. Terr. Jur. vol. i. 1842, p. 379, pl. cxxiv.Google Scholar
page 437 note 4 Pal. Indica, Jurassic Fauna of Cutch, vol. i. (Cephalopoda), p. 146. pl. xxxviii. figs. la. b; 2; 3a, b.Google Scholar
page 437 note 5 Ibid. p. 162, pl. xlvi. figs. la, A; 2a, b; pl. xlvii. fig. 3.
page 437 note 6 Palæontographica, vol. xxvii. p. 156, pl. xxvi. fig. 1.Google Scholar
page 437 note 7 Ibid. p. 155, pl. xxvii. figs. 1–3.
page 438 note 1 Petsehora-Land, 1846, p. 327, pl. xxi. figs. 1–3; pl. xxii. fig. 9.
page 438 note 2 Pal. Franç. Terr. Jur. vol. i. 1842, p. 414, pl. cxliii.Google Scholar
page 438 note 3 Pal. Franç. Terr. Jur. vol. i. 1842, p. 416, pl. cxliv. According to Oppel (Juraformation, p. 477), d'Orbigny's figure does not represent Hehl's Amm. piaunla; he, therefore, alters the name of d'Orbigny's species to Wagneri.Google Scholar
page 438 note 4 Oppel, A., Die Juraformation, 1856–1858, p. 477Google Scholar [Ammonites planula, d'Orbigny, Pal. Fran. Terr. Jur. vol. i. p. 416, pl. cxliv. (non Hehl)].Google Scholar
page 438 note 5 D'Orbigny,inde Verneuil, Murehison and de Koyserling, , Géologie de la Russie d'Europe et des montagnes de l'Oural, vol. ii. 1845, p. 430, pl. xxxiii. figs. 1–5 (tigs. 1, 2 especially).Google Scholar
page 439 note 1 D'Orbigny, ibid. p. 429, pl. xxxii. figs. 6–10.
page 440 note 1 Quart. Journ. Geol. Soc. vol. xxiii. (1867), p. 9.Google Scholar
page 440 note 2 Ibid. vol. xxvi. (1870), p. 230.