396 
EXPLANATION OF PLATES. 
BIGURE. 
. Nothoceras Bohemicum, Barr. U. Silur., Bohemia, 
. Lituites simplex, Barr. Silur., Europe, 
. Pteronautilus Seebachianus, Geinitz. Permian, Europe, 
. Clymenia undulata, Munst: Devon., Fichtelgebirge, 
13. Subelymenia evoluta, Orb. Devon., England, 
16. Aturia ziczac, Sowb. Eocene, England, 
. Temnochilus biangulatus, Sowb. Carb., England, 
18. Trematodiscus trisulcatus, Meek and Worthen. 
Subearboniferous, Indiana, 
. Cryptoceras subtuberculatus, Orb. Europe, 
PLATE 32) 
Goniatites Henslowi, Sowb. Carb., Isle of Man, 
21. Rhabdoceras Suessii, Hauer. Trias, Halistadt, 
. Bactrites gracilis, Sandb. Devonian, Nassau, 
3. Ceratites nodosus, Brug., . 
. Baculina arcuaria, Quenst. Muschelkalk, Wurtembure, 
26. Cochloceras Fischeri, Hauer. Trias, Europe, 
. Clydonites costatus, Hauer. Trias, Europe, 
. Clydonites delphinocephalus, Hauer. Trias, Europe, 
Crioceras cristatus, Orb. Gault, France, 
. Baculites anceps, Lam. Cret., France, 
. Baculites baculoides, Orb. Cret., France, 
Toxoceras bituberculatus, Orb, Neocomian, France, . 
Ancyloceras spinigerus, Sby. Gault, England, 
. Anisoceras Saussureanus, Pictet. Cret., Europe, 
. Seaphites wequalis, Sowb. Cret., Europe, 
PLATE 33. 
. Helicoceras Teilleuxii, Orb. Jur., France, 
. Turrilites costatus, Orb. Cret., France, 
. Turrilites Boblayi, Orb. Cret., Europe, ; : 
. Heteroceras Emericianus, Orb. Cret., Europe, . 85, 86 
. Hamites attenuatus, Sowb. Cret., Europe, 
. Hamites cylindraceus, Defr. Cret., Europe, 
. Hamulina trinodosa, Orb. Neocomian, France, 
. Tychoceras Emericianus, Orb. Cret., France, 
. Ammonites obtusus, Sowb. Lias, England, 
46. Thysanoceras fimbriatus, Sowb, Jurassic, Europe, 
PLATE 34. 
48. Stephanoceras annulatum,Sowb. Jurassic, Hurope, 
50. Haploceras ligatum, Orb. Cret., Europe, ; 
52. Phylloceras heterophyllum, Sowb. Jur., Kurope, 
60. Ammonites Beaumontianus, Orb. Cret., Europe, 
55. Ammonites capricornus, Schloth. Jur., Europe, 
