By Anthony D. Barnosky
This ebook chronicles the invention and research of animal fossils present in probably the most very important paleontological websites within the world-Porcupine Cave, positioned at an elevation of 9,500 ft within the Colorado Rocky Mountains. With tens of millions of pointed out specimens, this website has develop into the foremost resource of data at the fauna of North America's greater elevations among nearly 1 million and 600,000 years in the past, a interval that observed the development and retreat of glaciers a number of occasions. previously, little has been understood approximately how this dramatic weather swap affected lifestyles through the center Pleistocene. as well as proposing state of the art facts from Porcupine Cave, this examine additionally offers groundbreaking research on what the information from the positioning convey concerning the evolutionary and ecological alterations that happened during this interval, laying off gentle on how one of many world's such a lot urgent environmental concerns-global weather change-can impression lifestyles on the earth. Illustrations: fifty eight b/w photos, seventy six line illustrations, fifty seven tables
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This ebook chronicles the invention and research of animal fossils present in the most very important paleontological websites within the world-Porcupine Cave, positioned at an elevation of 9,500 ft within the Colorado Rocky Mountains. With tens of millions of pointed out specimens, this website has turn into the foremost resource of data at the fauna of North America's greater elevations among nearly 1 million and 600,000 years in the past, a interval that observed the improvement and retreat of glaciers a variety of instances.
British Fossil reptile websites are of foreign value in view that they comprise continues to be that fill the time gaps poorly recognized somewhere else. They contain wealthy vintage reptile beds that have been the resource of dozens of significant specimens. This quantity information all these websites that experience yielded fossil reptiles.
South American ecosystems suffered one of many maximum biogeographical occasions, after the institution of the Panamian land bridge, referred to as the “Great American Biotic Interchange” (GABI). This refers back to the alternate, in different levels, of land mammals among the Americas; this occasion began in the course of the past due Miocene with the looks of the Holartic Procyonidae (Huayquerian Age) in South the United States and keeps this day.
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Additional resources for Biodiversity Response to Climate Change in the Middle Pleistocene: The Porcupine Cave Fauna from Colorado
A small natural lake located just north of Antero Reservoir is so saline that it never freezes. French fur trappers referred to this portion of South Park as Bayou Salade in the midnineteenth century owing to the widespread saline marshes (Frémont, 1887). A section of the Front Range known as the Tarryall Mountains forms the northeastern side of South Park. The Tarryalls contain granite domes and few peaks higher than 3300 m elevation. Unlike higher-elevation portions of the Front and Mosquito ranges, the Tarryalls do not contain extensive highlands, and valley glaciers did not form there during the Pleistocene.
In fact, Porcupine Cave is not “a locality” in the Rocky Mountains; it is a cave that contains multiple, closely spaced, but temporally distinct localities. 3: A–A′, D–D′, and F–F′. scenario for Porcupine Cave. , a match), indicating mixing of strata by either animals or humans. ” Instead, the approach taken in this book is to specify from which localities fossils came in the systematic descriptions of the included taxa, and to suggest ecological interpretations only for those localities for which we have adequate sampling, temporal control, and appropriate taphonomic history.
LOC AL IT Y N U M B E R KU CO-123. COL L ECT ION PROTOCOLS COL L ECT ION PROTOCOLS Most fossils were collected from the surface. 9 m deep and consisted of four stratigraphic levels. Sediment from each level was wet screened as described for Fissure Fill A. Level designations appear on the field tags for this test excavation. Other material from the Gypsum Room was collected from the surface up to about 10 cm below the surface by CM crews between 1986 and 1989; these specimens have no indication of level designations on the field tags.