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FIG.
25. Worms, Middle Cambrian and recent 128
26. Chætognaths, Cambrian and recent 129
27. Jellyfish, Cambrian and recent 130
28. The twelve chief habitat zones 131
29. Life zones of Cambrian and recent invertebrates 131
30. Map--North America in Cambrian times 132
31. Sea-scorpions of Silurian times 133
32. Map--North America in Middle Devonian times 134
33. Changing environment during fifty million years 135
34. Fossil starfishes 136
35. Mutations of Waagen in ammonites 139
36. Mutations of Spirifer mucronatus 140
37. Shell pattern and tooth pattern of Glyptodon 148
38. Teeth of Euprotogonia and Meniscotherium 149
39. Adaptation of the fingers in a lemur 150
40. Total geologic time scale 153
41. Adaptation of form in three marine vertebrates--shark, ichthyosaur,
and dolphin 		155
42. Chronologic chart of vertebrate succession 161
43. The existing lancelets (Amphioxus) 162
44. Five types of body form in fishes 163
45. Map--North America in Upper Silurian time 164
46. The Ostracoderm Palæaspis 165
47. The Antiarchi. Bothriolepis 165
48. The Arthrodira. Dinichthys intermedius 166
49. A primitive Devonian shark, Cladoselache 167
50. Adaptive radiation of the fishes 168
51. Fish types from the Old Red Sandstone 170
52. Map--the world in Early Lower Devonian times 171
53. Change of adaptation in the limbs of vertebrates 172

-xxviii-

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Publication Information: Book Title: The Origin and Evolution of Life: On the Theory of Action, Reaction and Interaction of Energy. Contributors: Henry Fairfield Osborn - author. Publisher: Charles Scribner's Sons. Place of Publication: New York. Publication Year: 1918. Page Number: xxviii.
    
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