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The North American species of the bee genus Lithurge (Hymenoptera: Megachilidae)
Vol 343, Page 1
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The Tertiary sponges Aphrocallistes and Eurete from western Washington and Oregon
Vol 344, Page 1
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New genera and a new species of Central American salamanders, with a review of the tropical genera (Amphibia, Caudata, Plethodontidae)
Vol 345, Page 1
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The cranial morphology of the fossil beaver Dipoides smithi (Rodentia: Mammalia)
Vol 346, Page 1
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Studies on the taxonomy and distribution of American centridine bees (Hymenoptera: Anthophoridae)
Vol 347, Page 1
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Salamanders of the northwestern highlands of Guatemala
Vol 348, Page 1
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Systematics of xantusiid lizards of the genus Lepidophyma in northeastern Mexico
Vol 349, Page 1
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Megapaleontology of the Eocene Llajas Formation, Simi Valley, California
Vol 350, Page 1
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Molluscan paleontology and biostratigraphy of the Lower Miocene upper part of the Lincoln Creek Formation in southwestern Washington
Vol 351, Page 1
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Fishes of the genus Nansenia (Microstomatidae) with descriptions of seven new species
Vol 352, Page 1
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Kentriodon obscurus (Kellogg, 1931), a fossil dolphin (Mammalia: Kentriodontidae) from the Miocene Sharktooth Hill Bonebed in California
Vol 353, Page 1
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Systematics of Fissurella in the Peruvian and Magellanic faunal provinces (Gastropoda: Prosobranchia)
Vol 354, Page 1
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An Early Hemingfordian (Early Miocene) fossil vertebrate fauna from Boron, western Mojave Desert, California
Vol 355, Page 1