tag="{http://www.w3.org/1999/xhtml}a">56
| 41. |
a, Stenopora exilis (Dn.). b, Chaetetes tumidus (Edwards and Haine) |
57 |
| 42. |
Living Anthozoan Coral (Astræa) |
58 |
| 43. |
Tabulate Corals (Halisites and Favosites) |
59 |
| 44. |
Rugose Coral (Heliophyllum Halli) |
59 |
| 44a. |
Zaphrentis prolifica (Billings) |
60 |
| 45. |
Rugose Corals (Zaphrentis Minas, Dn., and Cyathophyllum Billingsi, Dn.) |
60 |
| 46. |
Modern Crinoid (Rhizocrinus Lofotensis) |
61 |
| 47. |
Palæaster Niagarensis (Hall) |
62 |
| 48. |
Palæchinus ellipticus (McCoy) |
62 |
| 49. |
Pleurocystites squamosus |
63 |
| 50. |
Heterocrinus simplex (Meek) |
63 |
| 51. |
Body of Glyptocrinus |
63 |
| 52. |
Extracrinus Briareus |
64 |
| 53. |
Pentacrinus caput-medusæ |
64 |
| 54. |
Lingula anatina |
65 |
| 55. |
Cambrian and Silurian Lingulæ |
65 |
| 56. |
Terebratula sacculus (Martin) |
66 |
| 57. |
Brachiopods; genus Orthis |
66 |
| 58. |
Rhynchonella increbrescens (Hall) |
66 |
| 59. |
Spirifer mucronatus (Conrad) |
67 |
| 59a. |
Athyris subtilita (Hall) |
67 |
| 60. |
Productus cora (D’Orbigny) |
68 |
| 61. |
Group of Older Palæozoic Lamellibranchs |
69 |
| 62. |
Conularia planicostata (Dn.). A Carboniferous Pteropod |
70 |
| 63. |
Silurian Sea-snails |
70 |
| 64. |
Squid (Loligo) |
72 |
| 65. |
Pearly Nautilus (Nautilus pompilius) |
72 |
| 66. |
Orthoceras |
73 |
| 67. |
Gomphoceras |
73 |
| 68. |
Lituites |
