The Terrestrial Eocene-Oligocene Transition in North America

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The transition from the Eocene to the Oligocene epochs, from approximately 47 to 30 million years ago, was the most dramatic episode of climatic and biotic change since the demise of the dinosaurs. The first part of the book summarizes the latest information in dating and correlation of the strata of late middle Eocene through early Oligocene age in North America. The second part reviews almost all the important terrestrial reptiles and mammals found near the Eocene-Oligocene boundary. This is the first comprehensive treatment of these rocks and fossils in over sixty years.
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Editorial Reviews

Summarizes the latest information in the dating and correlation of the strata of the late middle Eocene through early Oligocene age in North America, including the latest insights from argon/argon dating and magnetic stratigraphy, and reviews most of the important terrestrial reptiles and mammals found near the Eocene-Oligocene boundary in the White River Chronofauna, such as turtles, snakes, carnivores, artiodactyls, and perissodactyls. Includes b&w photos, diagrams, and illustrations, plus tables. Of interest to vertebrate paleontologists, geologists, mammalogists, and evolutionary biologists. Annotation c. Book News, Inc., Portland, OR (
From the Publisher
"...this book is an important resource for specialists." E. Delson, Choice
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Product Details

  • ISBN-13: 9780521021098
  • Publisher: Cambridge University Press
  • Publication date: 7/28/2005
  • Pages: 708
  • Product dimensions: 6.85 (w) x 9.72 (h) x 1.42 (d)

Table of Contents

Pt. I The Chronostratigraphy of the Uintan through Arikareean
1 Magnetic stratigraphy and biostratigraphy of the middle Eocene Uinta Formation, Uinta Basin, Utah 3
2 Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming 25
3 Magnetic stratigraphy, sedimentology, and mammalian faunas of the early Uintan Washakie Formation, Sand Wash Basin, northwestern Colorado 40
4 Theoretical biochronology, the Bridgerian-Uintan boundary and the "Shoshonian Subage" of the Uintan 52
5 Middle Eocene mammalian faunas of San Diego County, California 75
6 Stratigraphy and paleomagnetism of the middle Eocene Friars Formation and Poway Group, southwestern San Diego County, California 120
7 Magnetostratigraphy of the upper middle Eocene Coldwater Sandstone, central Ventura County, California 155
8 Stratigraphy and paleomagnetism of the upper middle Eocene to lower Miocene (Uintan to Arikareean) Sespe Formation, Ventura County, California 171
9 Magnetostratigraphy of the Eocene-Oligocene transition in Trans-Pecos Texas 189
10 Magnetic stratigraphy of the Duchesnean part of the Galisteo Formation, New Mexico 199
11 Stratigraphy and vertebrate faunas of the Bridgerian-Duchesnean Clarno Formation, north-central Oregon 206
12 Eocene-Oligocene faunas of the Cypress Hills Formation, Saskatchewan 240
13 Magnetic stratigraphy of the White River Group in the High Plains 262
14 Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana 278
15 The Whitneyan-Arikareean transition in the High Plains 312
Pt. II Common Vertebrates of the White River Chronofauna
16 Testudines 337
17 Squamata 354
18 Ischyromyidae 373
19 Cylindrodontidae 399
20 Castoridae 417
21 Canidae 433
22 Nimravidae 453
23 Amphicyonidae 476
24 Small Arctoid and Feliform Carnivorans 486
25 Merycoidodontinae and Miniochoerinae 498
26 Leptaucheniinae 574
27 Leptomerycidae 581
28 Camelidae 609
29 Hyracodontidae 652
Summary 664
Index 684
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