1913 AMMONITES LURIDUS 73c 



Comparable Species 

 ( 50, 27, 34, 46 I 

 ( 27, 30, 48, 45 I 



4w. centaurus, d'Orbigny, 1844, lxxvi, 3-6— T. 18, 35, 55, 35, 



F. 18, 39, 60, 40. 

 Am. centaurus ; Quenstedt, 1847, xiv, 9 c-e — F. 11, 40, yy, 27 ; 



9a,b. 

 Am. centaurus ; Oppel, 1853, 111, 8— F. 18, 32, 51, 40. 

 Am. centaurus ; Quenstedt, 1857, xvi, 16 — F. 15, 35, 60, 35. 

 Am. ragazzonii, Hauer, 1861, [1], 16, 17 — T. 25, 30, 35, 46. 

 Am. pettos ; Id. [1] 18, 19 — F. 17, 35, 60, 40. 

 Am. coquandi ; Dumortier, 1869 (III), xvm, 5, 6 — F. 18, 35, 35, 39. 

 Aegoceras pettos ; Wright, 1880, xxxvn, 5-7 — F. 33 (63), 26, 45, 50. 

 Am. centaurus ; Quenstedt, 1884, xxxiv, 30-40 — 37. F. 15, 35, 60, 



30 ; 38. F. 20, 31, 50, 37 ; 40. F. 24.5, 31, 50, 42. 

 Aegoceras capricornum ; Geyer, 1893, 111, 7 — F. 31, 30, 31, 42 ; 



8— F. 25, 35, 41, 41 ; 10— F. 18, 39, 46, 41. 

 Aegoceras centaurum ; Id. in, n — F. 25, 35, 48, 36 ; 12 — F. 21, 35, 



44. 40. 



See also Bettoni, Foss. Dom. (Pal. Suisse), 1900, several forms under 

 Cceloceras, — C. ragazzonii ; C. r. var. tardevoluta ; mut. multi- 

 costa, etc. ; with dimensions p. 74 : — tardevoluta, 24.5, 26, 34, 48 ; 

 mut. inflata, 20.5, 29, 51, 46 ; mut. multicosta, 19.5, 25, 38, 46. 



