Download Bringing Fossils to Life: An Introduction to Paleobiology by Donald R. Prothero PDF

By Donald R. Prothero

This is often the 1st textual content to mix either paleontology and paleobiology. conventional textbooks deal with those individually, regardless of the new development to mix them in educating. It bridges the space among simply theoretical paleobiology and in simple terms descriptive invertebrate paleontology books. The textual content is concentrated at undergraduate geology and biology majors, with the emphasis on organisms, instead of useless items to be defined and catalogued. present rules from sleek biology, ecology, inhabitants genetics, and lots of different recommendations should be utilized to the learn of the fossil checklist.

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Juniperus occidentalis Hook. Larix occidentalis Nutt. Picea engelmanni Parry Pinus albicaulis Engelm. Pinus contorta Dougl. Pinus ponderosa Dougl. Pseudotsuga menziesii (Mirbel) Franco Purshia tridentata (Pursh) DC Tetradymia canescens DC. Thuja plicata Donn. ) Scribn. &Smith Yes G Aristida longiseta Steud. Yes G Balsamorhiza sagittata (Pursh) Nutt. Bromus tectorum L. Calamagrostis rubescens Buckl. Yes Yes Yes A G G Carex geyerii Boott Carex rossii Boott Elymus cinereus Scribn. & Merr. Festuca idahoensis Elmer Yes Yes Yes Yes G G A G Festuca viridula Vasey Koeleria cristata Pers.

7 ka) was a period of cooler and drier conditions than today. A closed pine forest existed at Carp Lake at that time (curve E, Fig. 5). At KP-1 this was a period with alternating sagebrush steppe and grassland. Very abundant sagebrush phytoliths, likely indicating a very dry stage at KP-1, was detected at 830 cm depth (65 ka). This episode (number 8 on curve A, Fig. 5) lines up well with the cold episode implied by the oxygen isotope record (curve D) at the same depth. Chronologically, these samples likely correspond to the marine isotope stage 4 on the SPECMAP curve (curve F, Fig.

The sampling interval, however, was thick enough (ca. 30 cm) to mitigate the impact of possible mixing. METHODS Phytoliths from KP-1 section were extracted using standard wet oxidation and heavy flotation techniques at Colorado State University (Stevenson, 1997). Approximately 20 g of soil per sample was obtained from each diagnostic soil horizon. The silt fraction (5-100 microns) was used for counting phytoliths. Identification of phytoliths from fossil samples was based on a reference collection obtained from 38 species of plants and 58 modern soils from under 8 vegetation types in the interior Pacific Northwest (Blinnikov, 1999).

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