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Browsing Smithsonian Contributions to Paleobiology by Issue Date
Now showing items 1-20 of 96
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(1969)A new fossil horizon and locality for the Evanston formation, near Little Muddy Creek in the Fossil Basin of southwestern Wyoming, has yielded remains of a mammalian faunule of middle Paleocene age. Relationships are shown ...
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(1969)Thirty-five new genera are described, 27 of them based on new species. They are classified by superfamily as follows: ENTELETACEA: <i>Acosarina</i> (<i>A. dorsisulcata</i>, new species). DAVIDSONIACEA: <i>Goniarina</i> ...
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(1970)Planktonic Foraminifera collected from the vicinity of the North Atlantic Current and the Gulf Stream during late winter-early spring and fall of 1964 are described and their distributions are recorded. Variations in faunal ...
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(1970)A catalog of the illustrated Paleozoic fossils in the National Museum of Natural History is presented, updating United States National Museum Bulletin 53, part 2, section 3, 1907.
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Mode of Growth and Functional Morphology of Autozooids in Some Recent and Paleozoic Tubular Bryozoa (1971)Membranous structures reflecting functional organs are recognizable in a relatively few tubular Bryozoa of Paleozoic age belonging largely to the order Trepostomata. Some skeletal structures also seem to reflect functional ...
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(1971)The new genus <i>Abyssocythere</i> Benson has been erected to receive five new species and one described species of psychrospheric ostracode ranging in age from the Paleocene to the Recent. These species include <i>Abyssocythere ...
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(1971)Highly diversified assemblages of cheilostome Bryozoa in the Danian Stage of southern Sweden and Denmark represent the culmination of primarily divergent evolutionary trends originating in the first appearance of the group ...
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(1971)This collection of papers was solicited from colleagues and students of G. Arthur Cooper as a <i>Festchrift</i> in recognition of his profound influence on the study of brachiopods and their biostratigraphic application ...
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(1971)Type specimens of the conodonts in the national collection are listed alphabetically by generic and specific name. Geographic, stratigraphic, bibliographic and other pertinent information concerning each specimen is included ...
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(1972)The Mesozoic and Tertiary echinoids are described from Saudi Arabia. Fifty-one species, thirty-four of them new, occur in beds ranging from the Lower Jurassic to the Miocene. Two species are present in the Lower Jurassic ...
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(1972)A collection of brachiopods from the Baja California Abyssal Plain forms a deep-sea assemblage unusual in that it contains three genera that are unrelated but externally almost identical; i.e., they are homeomorphs. One ...
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Upper Miocene Echinoids from the Yorktown Formation of Virginia and Their Environmental Significance (1972)Five echinoid species are described from the upper Miocene part of the Yorktown Formation of Virginia: <i>Echinocardium orthonotum</i> (Conrad), <i>Arbacia imporcera</i> (Conrad), <i>Psammechinus philanthropus</i> (Conrad), ...
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(1972)The “<i>Bradleya</i> problem” is concerned with the discovery and definition of a group of fossil and Recent reticulate ostracodes, several of which are common to Cenozoic deep-sea sediments in many parts of the world ocean ...
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(1972)The first of a projected six-part monograph on the brachiopods of the reference area for the North American Permian in the Glass, Guadalupe, Diablo, Delaware, Hueco, and Chinati Mountains of West Texas and adjacent New ...
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(1973)About 750 feet of sediments of the early Oligocene (Chadronian) White River Formation are exposed along Flagstaff Rim in south-central Natrona County, Wyoming. About 4,000 specimens of fossil vertebrates have been collected ...
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(1973)Brachiopods dredged on the worldwide exploratory cruises of R/V <i>Vema</i>, of the Lamont-Doherty Geological Observatory of Columbia University, are important in expanding knowledge of brachiopod distribution and ...
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(1973)The collections described in this paper add significantly to the brachiopod fauna. Most of the specimens were collected on the following cruises of the Woods Hole Oceanographic research vessel <i>Anton Bruun</i> while ...
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(1974)The second of a six-part monograph on brachiopods from the reference area for the North American Permian in mountain ranges of West Texas and adjacent New Mexico, this volume presents a historical resumé of the ordinal ...
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(1974)Organic skeletons of two dendroid graptolites and an aberrant sessile graptolite (<i>Mastigograptus</i> sp.), all Ordovician in age, were isolated chemically from the matrix and used subsequently for ultrastructural studies ...
Now showing items 1-20 of 96
