The Story of the Earth and Man
Chapter IV.--The Silurian Ages.
Geography of the Continental Plateaus.--Life of the Silurian.--Reign of Invertebrates.--Corals, Crinoids, Mollusks, Crustaceans.--The First Vertebrates. Silurian Fishes.--Land Plants 56
The Story of the Earth and Man
Geography of the Continental Plateaus.--Life of the Silurian.--Reign of Invertebrates.--Corals, Crinoids, Mollusks, Crustaceans.--The First Vertebrates. Silurian Fishes.--Land Plants 56