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Hervey Woodburn Shimer

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Stand Alone

Index fossils of North America
North American Index Fossils, Invertebrates Conularida, Pteropoda, Cephalopoda, Annelida, Trilobita, Phyllopoda, Ostracoda, Cirripedia, Malacostraca, Merostomata, Arachnida, Myriopoda, Insecta, Cystoidea, Blastoidea, Crinoidea, Ophiuroidea,