The Texan Permian and Its Mesozoic Types of Fossils |
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Archer Counties aviculoides Baylor County Bellerophon Big Wichita boniferous bulletin Camp Creek Carboniferous system cephalopods character clayey Coal Measures Coal-Measure strata collections commingled considerable number Cretaceous Cummins Cythere nebrascensis discovery forms Fusulina Geinitz Gemmellaro Genus Geol Godwin Creek locality GONIATITES gypsum-bearing beds imperfect example indicate interior invertebrate fossils invertebrate species known Lateral view layers Left side view living chamber Louis Acad McChesney Measures of Illinois Meek & Hayden Meek & Worthen Meekoceras Mesozoic types Military Crossing locality Missouri Smithsonian Cont molluscan MURCHISONIA NATICOPSIS natural cast NAUTILUS North America North American strata numerous obtained Orthoceras Paleont paleontological Paleozoic Patella perattenuata Permian age Permian of Europe Pleurophorus Popanoceras walcotti Prof referred regarded REMEX reputed Permian strata Right side view saddle sandy septa shell Shumard small example stratigraphical stratum Texan Permian Texas transverse Trias Triassic type specimens umbilicus Upper Missouri Smithsonian volutions Waagenoceras cumminsi WASHINGTON GOVERNMENT PRINTING winslowi