UC Publications in Geological Sciences – serie
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6 produkter
6 produkter
Del 136 - UC Publications in Geological Sciences
Mammalian Fauna of the Judith River Formation (Late Cretaceous, Judithian), Northcentral Montana
Häftad, Engelska, 1992
536 kr
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Approximately 12 million years before the extinction of the dinosaurs, a diverse terrestrial fauna inhabited what is now northcentral Montana. The author describes and evaluates the systematic relationships of the large mammalian fauna of this area, which included rodent-like multituberculates, primitive therians, marsupials, and early eutherian mammals, and also analyzes the biogeography of mammalian faunas of the Judithian age.
Del 142 - UC Publications in Geological Sciences
Eocene Thunder Mountain Flora of Central Idaho
Häftad, Engelska, 1998
465 kr
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An Eocene (45 Ma) flora from Thunder Mountain caldera shows that montane conifer forest species from upper slopes descended to interfinger with mixed conifer-deciduous hardwood forest on the caldera floor then near 1700 m. Most species are allied to those in the western United States, but a few genera are in China. Precipitation was near 100 cm yearly, with most in summer.
Del 143 - UC Publications in Geological Sciences
Oligocene Haynes Creek Flora of Eastern Idaho
Häftad, Engelska, 1998
507 kr
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This flora of 70 species is dominated by deciduous trees, many with descendants in China. Precipitation was 890 mm, mean annual temperature 12.5!C, the annual range 10!C, and freezing rare. Elevation was about 1000 meters. Comparison with the Horse Prairie flora, 30 miles east and across the present continental divide, indicates that the divide was then low and discontinuous, with warmer climate to the east.
Del 144 - UC Publications in Geological Sciences
Biostratigraphy and Vertebrate Paleontology of the San Timoteo Badlands, Southern California
Häftad, Engelska, 2000
564 kr
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The author describes forty-two fossil taxa recovered during a study of the San Timoteo Badlands that used magnetobiostratigraphy to develop a temporal framework for addressing the tectonic evolution of southern California over the last 6 million years. For the Pliocene, small mammals are an effective means of correlating a magnetostratigraphy to the Geomagnetic Polarity Time Scale when radioisotopic dates are unobtainable.
Del 145 - UC Publications in Geological Sciences
Miocene (10-12 Ma) Evergreen Laurel-Oak Forest from Carmel Valley, California
Häftad, Engelska, 2000
422 kr
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This is a study of the Miocene Carmel flora of California, an evergreen laurel-oak forest that grew in a mild temperate (mean annual temperature of 15 degrees C), frost-free climate, with annual precipitation of about 760 mm (30 in.). Collectively, the Carmel and other Miocene floras like the San Pablo and Temblor (broad-leafed deciduous trees, with few evergreen species), the Puente (evergreen oak forest with chaparral species), the Mint Canyon, Ricardo, and Tehachapi (numerous arid subtropical scrub associated with oak woodland and chaparral species) suggest they foreshadowed a similar distribution of the different California vegetation zones today.
Del 146 - UC Publications in Geological Sciences
Systematics and Evolution of the Sthenurine Kangaroos
Häftad, Engelska, 2004
1 063 kr
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This work represents an exhaustive review of one of the most important late Cenozoic radiations of Australian marsupials: the short-faced, or sthenurine kangaroos. Sthenurines originated in the Miocene, diversified in the Pliocene, and radiated in the Quaternary to become one of Australia's most conspicuous mammal groups, the only lineage of browsing marsupials comparable in diversity to the browsing artiodactyl guilds of other continents.The culmination of 12 years' research, the monograph details the taxonomy of the sthenurines, redescribing each of the six genera (two new) and 26 species (four new), and is amply illustrated with line drawings and more than 100 pages of plates. It presents the first cladistic analysis of sthenurines, and by synthesizing systematic, functional morphological, biochronologic and zoogeographic data, considers the major directions of adaptive change within the group, and the major environmental factors that drove their evolution.It is one of the most comprehensive studies of an extinct marsupial lineage ever made, and should be an essential reference for students of Australian late Cenozoic vertebrates, marsupial evolution, environmental change and Pleistocene extinctions.