AEGOCERAS PLANICOSTA. 



335 



near Cheltenham, in a ferruginous marl, belonging to the Amaltheus oxynotus-ZQWQ^ and 

 from beds of the same horizon at Gloucester, obtained daring the excavations made 

 for the new docks. It certainly is not found at Lyme Regis, and is unknown in 

 Yorkshire. Professor Quenstedt's original specimens were collected from the upper region 

 of Lias /3 at Balingen, Ofterdingen, Betzingen, Wiirtemberg. There this Ammonite is 

 associated with Belemnites acutus. Mill ; Leda Bomani, 0pp. ; Mytilus minimus, Sow. ; 

 Plicatula ventricosa, Goldf. ; Gryphcsa obliqua, Sow.; Bht/nchonella oxi/nota, Q}XQX\^t. ; 

 according to Dr. Oppel (' Juraformation,' p. 54). 



AeGOCERAS PLANICOSTA, 



PI. XXIV, figs. I— 8 ; PI. XXV, figs. 1—3. 



Ammonites planicosta. 



Sowerby, Mineral Conchology, vol. i, p. 167> 



tab. 73, figs. 1—5, 1814. 

 Lamarck. Anim. sans Vert^bres, t. vii, p. 638, 



1822. 

 Toung and Bird. Yorkshire Coast, p. 248, pi. 13, 



fig. 6, 1822. 

 De Haan. Monogr. Ammonit. et Goniatit., p. 92, 



No. 26, 1825. 

 Toung and Bird. Yorkshire Coast, p. 259, 1828. 

 Zieten. Versteinerungen Wurttembergs, p. 6, tab. 5, 



fig. 2, 1830. 

 Foltz. Jahrbuch f. Min. Geol., p. 272, 1830. 

 Zieten. Versteinerungen Wiirttembergs, p. 6, tab. 4, 



fig. 8, 1830. 

 Von Buck. Ueber Ammoniten j Abh. Berlin Acad, 

 d. Wissensch., pi. iv, fig. 4 (1830), 

 1832. 

 Roemer. Versteiner. Nord-Deutsch. Oolithen- 



Gebirges, p. 192, 1836. 

 Bronn. Letbsea Geognostica, p. 440, pi. xxiii, fig. 1, 



1837. 

 d'Orhigny. Paleontol. Fran9ai8e ; Ter. Jurassiques, 



p. 181, pi. 42, figs. 4— 7, 1842. 

 Quenstedt. Flozgebirge Wiirtembergs, p. 158, 



1843. 

 d'Orhigny. Pal. Fran^aise ; Terr. Jurassiques, p. 

 325, pi. 103, 1844. 



— CAPKicoRNUS NUDUS, Quenstedt. Cephalopoden, p. 81, tab. iii,figs. 6 a, b, 



1849. 



— — _ — Der Jura, p. 96, tab. 12, fig. 3, 1858. 

 Aegoceras PLANICOSTA, Neumayr. Zeitschrift der Deutsch. geol. Gesellschaft, 



p. 906, 1875. 



— LAXICOSTATA, 



PLANICOSTA, 



PlANITES PLANICOSTATUS, 



Ammonites — 



— ZiPHUS, 



— PLANICOSTA, 



CAPKICOENUS, 



— capricornus, 



— planicosta, 

 tcrrilites coynarti, 

 Ammonites capricornus, 



— Dudressieri, 



