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List of illustrations
The nature preservation and significance of fossils
How to collect and prepare fossils
8 other sections not shown
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abundant algae ambulacral animals appendages arms beds birds body brachiopods calcareous calcite Cambrian carbonate Carboniferous cavity cephalopods chitin colony conularids coral Cretaceous crinoids crustaceans deposits developed Devonian dorsal echinoderms Eocene eurypterids extinct feet ferns Figure fishes Foraminifera forms Fossils by H. W. fresh-water gastropods genera genus geological gills Grabau graptolites Greek groove H. W. Shimer Haswell horny hydroid Hydrozoa hyponome includes Index Fossils Jurassic known Latin layer Lepidodendron lime limestone living Lower Macmillan mammals mantle marine Mesozoic Middle Devonian mold mollusks mouth muscle North America Ordovician organisms ostracoderms pair Paleontology Paleozoic pelecypods Permian phylum plants plates Pleistocene polyp posterior present preserved primitive recent represented reptiles restoration rocks sandstones sediments septa shales shell showing silica Silurian skeleton species specimens spines sponges starfishes structure Subclass surface tentacles Textbook of Zoology tion Triassic trilobites tube Upper Devonian valve ventral vertebrates worms York State Museum Zoology by Parker