| 73 |
| 69. |
Nautilus Avonensis (Dn.) |
74 |
| 70. |
Goniatites crenistria (Philips) |
74 |
| 71. |
Ceratites nodosus (Schloth) |
75 |
| 72. |
Ammonites Jason (Reinecke) |
76 |
| 72a. |
Suture of Ammonites componens (Meek) |
76 |
| 73. |
Cretaceous Ammonitidæ |
77 |
| 74. |
Belemnite |
78 |
| 74a. |
Belemnoteuthis antiquus |
78 |
| 75. |
Cambrian Trilobites |
79 |
| 76. |
Transverse section of Calymene. A Silurian Trilobite |
80 |
| 76a. |
Burrows of Trilobite and of modern King-crab |
81 |
| 77. |
Silurian Trilobites |
82 |
| 78. |
Devonian and Carboniferous Trilobites |
83 |
| 79. |
Palæozoic Ostracod Crustaceans |
83 |
| 80. |
Pterygotus anglicus |
84 |
| 81. |
Amphipeltis paradoxus (Salter) |
85 |
| 82. |
Anthropalæmon Hilliana (Dn.) |
85 |
| |
Frontispiece. Cordaites, of the group of Dory-Cordaites |
88 |
| 83. |
Protannularia Harknessii (Nicholson) |
91 |
| 84. |
American Lower Silurian Plants |
92 |
| 86. |
Fragment of outer surface of Glyptodendron of Claypole |
93 |
| 87. |
Psilophyton princeps (Dn.) |
95 |
| 88. |
Trunk of a Devonian Tree-fern (Caulopteris Lockwoodi, Dn.) |
97 |
| 89. |
Frond of Archæopteris Jacksoni (Dn.) |
98 |
| 90. |
Portion of a branch of Leptophleum rhombicum (Dn.) |
98 |
| 91. |
Calamites radiatus (Brongniart) |
99 |
| 92. |
A Devonian Taxine Conifer (Dadoxylon ouangondianum, Dn.) |
100 |
| 93. |
Group of Devonian fruits, &c. |
101 |
| 94. |
Structures of the oldest-known Angiospermous Exogen (Syringoxylon mirabile, Dn.) |
|
