The book Evolution And Its Relation to Religious Thought was written by author Leconte, Joseph, 1823-1901 Here you can read free online of Evolution And Its Relation to Religious Thought book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Evolution And Its Relation to Religious Thought a good or bad book?
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CADUCIBRANCH. PERENNIBRANCH. FISH. Diagram showing the stages of deyelopment of amphibians. (To be read upward.) Now, this is undoubtedly the order of succession of forms in geological times — i. e., in the phylogenic series. This series is indicated by the arrows in the diagram. Pishes first appeared in the Devonian and Upper Silurian in very reptilian or rather amphibian forms. Then in the Carboniferous, fishes still continuing, there appeared the lowest — ^i. e., most fish-like — ^forms of a...mphibians. These were undoubtedly perenmbranchs. In the Per- mian and Triassic higher forms appeared, which were cer- tainly caducibranch. Pinally, only in the Tertiary, so far as we yet know, do the highest form (anoura) appear. The general similarity of the three series is complete. If we read the diagram horizontally, we have the onto- genic series ; if diagonally with the arrows, we have both the taxonomic and the phylogenic series. 2. Aortic Arches. — But some will, perhaps, say that these stages in the ontogeny are only examples of adapt- Digitized by Google 134: EVIDENCES OF THE TRUTH OF EVOLUTION.
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