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Early Pleistocene pre-glacial and glacial rocks and faunas of north-central Nebraska. Bulletin of the AMNH ; v. 148, article 1

Show simple item record Skinner, Morris F. en_US Hibbard, Claude William, 1905-1973. en_US Gutentag, Edwin D., 1931- en_US Smith, G. R. Lundberg, John G. Holman, J. Alan. Feduccia, Alan. Rich, Pat Vickers. 2005-10-06T14:53:34Z 2005-10-06T14:53:34Z 1972 en_US
dc.description 148 p., [2] folded leaves of plates : ill., maps ; 27 cm. en_US
dc.description Includes bibliographical references (p. 136-148). en_US
dc.description Geology / Morris F. Skinner -- Systematics -- Analysis of ostracodes from the Sand Draw faunal localities / E.D. Gutentag -- The Sand Draw fish fauna / G.R. Smith and J.G. Lundberg -- Amphibians and reptiles / J. Alan Holman -- Class Aves / J. Alan Feduccia and Pat Vickers Rich -- Class Mammalia / Claude W. Hibbard -- Sand Draw local fauna : correlation, age, and paleoecology / Claude W. Hibbard. en_US
dc.description.abstract "A study of the early Pleistocene rocks of the non-glaciated region of north-central Nebraska shows that a paleovalley fill (Keim Formation, new name) that contained the Sand Draw local fauna was preglacial. The stratigraphic position of the overlying Long Pine Formation, new name, is significant because it is the first evidence of a fluvioglacial outwash in the area. Two later sets of deposits overlie the Long Pine formation: Duffy and Pettijohn formations, new names. The source of the gravel in the Long Pine Formation has been a matter of conjecture, some geologists believing it to be the Black Hills, and others the Rocky Mountains. Supporting evidence for either provenience is lacking. Devonian fossils in the Long Pine Gravel indicate that the source was to the north-northeast near Lake Winnepegosis in Manitoba. The Sand Draw local fauna, previously considered Nebraskan (first continental glacier) or Aftonian (first interstadial), correlates with other Blancan faunas, and is the most diverse and northern known of Blancan time. The following groups comprise the fauna: 42 taxa of molluscs, 14 taxa of ostracodes, 10 taxa of fishes (Chaenobryttus serratus, new species), four taxa of amphibians, 14 taxa of reptiles (Geochelone oelrichi, new species), at least 10 taxa of birds, and 35 taxa of mammals. The mammalian fauna has these new forms: a shrew, Planisorex dixonensis, new genus; four rodents, Spermophilus boothi, new species; Spermophilus meltoni, new species; Ophiomys magilli, new species; Ophiomys fricki, new species; and a mustelid, Buisnictis burrowsi, new species. Some of these fossils indicate that the early Pleistocene climate was warmer than the present one, sub-humid, with evapo-transpiration about equal to average annual precipitation. Presence of the large land tortoise, Geochelone, is evidence that the temperature seldom, if ever, dropped below 0°C. Pollen from the Keim Formation is definaitely not of glacial type"--P. 11. en_US
dc.format.extent 27695615 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : [American Museum of Natural History] en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 148, article 1 en_US
dc.subject.lcc QH1 .A4 vol.148, art.1, 1972 en_US
dc.subject.lcsh Glacial epoch -- Nebraska. en_US
dc.subject.lcsh Paleontology -- Pleistocene -- Nebraska. en_US
dc.subject.lcsh Paleontology -- Nebraska. en_US
dc.subject.lcsh Geology, Stratigraphic -- Pleistocene -- Nebraska. en_US
dc.subject.lcsh Geology -- Nebraska. en_US
dc.title Early Pleistocene pre-glacial and glacial rocks and faunas of north-central Nebraska. Bulletin of the AMNH ; v. 148, article 1 en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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