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List of illustrations
Classification and description of animalsconcluded PAGE
How to collect and prepare fossils
4 other sections not shown
abundant algae amphibians animals appendages armored beds birds body brachiopods calcareous Cambrian carbonate Carboniferous carnivorous cavity cephalopods chitin club mosses color corals Cretaceous crinoids crustaceans cycads deposits Devonian dorsal Early Tertiary echinoderms Eocene eurypterids feet ﬁeld ﬁgure Figure Figure Figure ﬁrst ﬁshes Foraminifera fresh-water gastropods genera genus geologic gills Grabau graptolites Greek groove horny includes Index Fossils Jurassic known land Latin layer Lepidodendron lime limestone lobes Lower lung fishes mammals mantle marine Mesozoic mold mollusks mouth muscle Museum Ordovician organisms ostracoderms pair Paleontology Paleozoic pelecypods Permian phylum plants plates Pleistocene polyp posterior present preserved primitive represented reptiles restoration rocks Ruedemann sandstone Schuchert sediments seed ferns segments septa shales sharks shell showing silica Silurian skeleton sometimes species specimens spines sponges spores starfishes stem subclass surface tentacles Textbook of Geology tion Triassic trilobites tube types Upper Devonian valve ventral vertebrates worms York