348 



THE LIAS AMMONITES. 



near Charmouth, Dorset (see p. 89), where I have collected it associated with Aeg. 

 Bechei, Belemnites davatus, and Monotis inaquivalvis, all in the same slab. It is found 

 in marls of the same horizon in Somersetshire and Gloucestershire. 



Dumortier says : — " Of all the Ammonites of the Middle Lias Am. Davoei is 

 the most important and most characteristic form ; its ornamentation and size are more 

 constant ; and it presents itself always in the same horizon, that is to say, above the 

 lowest beds of the Middle Lias, and in company with Am. capricorniis and Am. 

 fimbriatus. I do not know a bed at this level in which I have not found Am. 

 Davcei." It has been collected in many Departments of France, as at Mulhausen and 

 Uhrwiler, Bas-Rhin ; near Nancy, Meurthe ; Amaye-sur-Orne, and Vieux-Pont, near 

 Bayeux, Calvados ; Saint-Rambert, Ain ; near Lyon, Rhone ; Pouilly-en-Auxois, Semur, 

 Venarey, Cote-d'Or ; Metz, Moselle. 



In Germany, near Boll; at Bargau, near Gmiind and Aalen ; at Fiizen between 

 Donaueschingen and Schaffhausen. 



In Italy, in the Appenines ; in Red Limestone at Monte Calvi ; in Grey Limestone 

 Monti di Cetona, near Lake Como. 



In Switzerland, in the Bernese Alps ; and at Coulat and Fondement, near Bex. 



Aegoceras Taylori, Sowerbi/. PI. XXXI, figs. 5—7. 



Ammonites Taylori, 



proboscidens, 



Tatlori, 



lamellosus, 



Taylori, 



— costatds, 



Sowerby. Mineral Conchology, vol. vi, p. 23, pi. 514, 



fig. 1,1826. 

 Zieten. Versteinerungen Wurtembergs, p. 9, pi. x, 



fig. 1, 1830. 

 Quenstedt. Fldzgebirge Wiirterabergs, p. 176, 1843. 



cT Orbigny. 

 cC Orbigny. 

 Quenstedt. 



— NODOSUS, Quenstedt. 



— Giebel 



— Oppel. 



coenutus, 



quadricornuxus, 



Taylori, 



Aegoceras 



Pal. Fran?. ; Terr. Jurass., pi. 84, 1842. 

 Ibid., p. 323, pi. 102, figs. 3—5, 1844. 

 Cephalopoden, p. 136, tab. ix, fig. 20, 



1849. 

 Ibid., 136, tab. ix, fig. 21, 1849. 

 Fauna der Vorwelt, t. iii, p. 697, 1852. 

 Mittl. Lias Schwabens, Jahresh. Wiirtt., p. 92, 

 1853. 

 Simpson. Fossils of tlie Yorkshire Lias, p. 71, 1855. 

 Simpson. Ibid. 



Oppel. Die Juraformation, p. 165, 1856. 

 Quenstedt. Der Jura, p. 135, pi. 16, fig. 8, 1858. 

 SchlOnbach. Die Eisenstein d. Mittler Lias ; Zeitschr. d. 

 Deutsch. geolog. Gesellschaft, p. 527, 

 1863. 

 Tate and Blake. Yorkshire Lias, p. 279, 1876. 

 Neumayr. Zeitschrift der Deutsch. geol. Gesellschaft, 

 p. 906, Jahr 1875. 



