| PAGE | ||
| 1. | Internal ridge of hyoid plate of Asterolepis | 31 |
| 2. | Shagreen of Raja clavata:—of Sphagodus | 54 |
| 3. | Scales of Acanthodes sulcatus:—shagreen of Scyllium stellare | 55 |
| 4. | Scales of Cheiracanthus microlepidotus:—shagreen of Spinax Acanthias | 56 |
| 5. | Section of shagreen of Scyllium stellare:—of scales of Cheiracanthus microlepidotus | 56 |
| 6. | Scales of Osteolepis microlepidotus:—of an undescribed species of Glyptolepis | 57 |
| 7. | Osseous points Of Placoid Cranium | 65 |
| 8. | Osseous centrum of Spinax Acanthias:—of Raja clavata | 67 |
| 9. | Portions of caudal fin of Cheiracanthus:—of Cheirolepis | 69 |
| 10. | Upper surface of cranium of Cod | 72 |
| 11. | Cranial buckler of Coccosteus | 74 |
| 12. | Cranial buckler of Osteolepis | 75 |
| 13. | Upper surface of head of Osteolepis | 77 |
| 14. | Under surface of head of Osteolepis | 79 |
| 15. | Head of Osteolepis, seen in profile | 80 |
| 16. | Cranial buckler of Diplopterus | 81 |
| 17. | Ditto | 82 |
| 18. | Palatal dart-head, and group of palatal teeth, of Dipterus | 83 |
| 19. | Cranial buckler of Dipterus | 85 |
| 20. | Base of cranium of Dipterus | 86 |
| 21. | Under jaw of Dipterus | 87 |
| 22. | Longitudinal section of head of Dipterus | 88 |
| 23. | Section of vertebral centrum of Thornback | 92 |
| 24. | Dermal tubercles of Asterolepis | 95 |
| 25. | Scales of Asterolepis | 96 |
| 26. | Portion of carved surface of scale | 96 |
| 27. | Cranial buckler of Asterolepis | 98 |
| 28. | Inner surface of cranial buckler of Asterolepis | 99 |
| 29. | Plates of cranial buckler of Asterolepis | 102 |
| 30. | Portion of under jaw of Asterolepis | 103 |
| 31. | Inner side of portion of under jaw of Asterolepis | 104 |
| 32. | Portion of transverse section of reptile tooth of Asterolepis | 105 |
| 33. | Section of jaw of Asterolepis | 106 |
| 34. | Maxillary bone? | 108 |
| 35. | Inner surface of operculum of Asterolepis | 109 |
| 36. | Hyoid plate | 110 |
| 37. | Nail-like bone of hyoid plate | 111 |
| 38. | Shoulder plate of Asterolepis | 112 |
| 39. | Dermal bones of Asterolepis | 113 |
| 40. | Internal bones of Asterolepis | 114 |
| 41. | Ditto | 115 |
| 42. | Ischium of Asterolepis | 116 |
| 43. | Joint of ray of Thornback:—of Asterolepis | 117 |
| 44. | Coprolites of Asterolepis | 118 |
| 45. | Hyoid plate of Thurso Asterolepis | 124 |
| 46. | Hyoid plate of Russian Asterolepis | 127 |
| 47. | Spine of Spinax Acanthias:—fragment of Onondago spine | 143 |
| 48. | Tail of Spinax Acanthius:—of Ichthyosaurus tenuirostris | 172 |
| 49. | Port Jackson Shark (Cestracion Phillippi) | 177 |
| 50. | Tail of Osteolepis | 195 |
| 51. | Tail of Lepidosteus osseus | 196 |
| 52. | Tail of Perch | 197 |
| 53. | Altingia excelsa (Norfolk-Island Pine) | 212 |
| 54. | Fucoids of the Lower Old Red Sandstone | 216 |
| 55. | Two species of Old Red Fucoids | 217 |
| 56. | Fern (?) of the Lower Old Red Sandstone | 219 |
| 57. | Lignite of the Lower Old Red Sandstone | 221 |
| 58. | Internal structure of lignite of Lower Old Red Sandstone | 223 |
About This Book
The author scrutinizes fossil fishes, centring on a large placoid specimen from Stromness, and employs careful anatomical description and original woodcut illustrations to challenge contemporary development theories. He surveys fossil assemblages across Palaeozoic, Secondary, and Tertiary strata, assesses cerebral and embryonic features, compares placoid attributes with other vertebrates, and considers molluscan and plant remains to reconstruct ancient environments. Drawing on these observations, he contends that the rock record requires cautious interpretation and that popular notions of progressive, unguided development rest on incomplete or misread evidence, while urging restraint against materialist inferences unsupported by paleontological fact.