Late Triassic Footprint Fauna from the Culpeper Basin, Northern Virginia (U. S. ) PDF Download
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Author: Robert Weems
Publisher: American Philosophical Society
ISBN: 9781422374382
Category : Nature
Languages : en
Pages : 100
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Book Description
Thousands of footprint impressions, probably of Norian age, have been discovered on a single bedding plane in a quarry in the Culpeper Basin of N. Virginia. About 830 tracks on this bedding surface, contained in 32 recognizable trackways, were studied in detail. The other tracks were too obscure for meaningful analysis. Herbivores greatly outnumber carnivores, & small herbivores are more abundant than large ones. The order of appearance of these trackmakers suggests that smaller & less agile species preferred soft ground, whereas larger carnivorous forms preferred a firmer substrate. From the measured print sizes, stride lengths, & pace angles, it was possible to estimate the hip height, body length, Froude numbers, & speed of each trackmaker. Illus.
Author: Robert Weems
Publisher: American Philosophical Society
ISBN: 9781422374382
Category : Nature
Languages : en
Pages : 100
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Book Description
Thousands of footprint impressions, probably of Norian age, have been discovered on a single bedding plane in a quarry in the Culpeper Basin of N. Virginia. About 830 tracks on this bedding surface, contained in 32 recognizable trackways, were studied in detail. The other tracks were too obscure for meaningful analysis. Herbivores greatly outnumber carnivores, & small herbivores are more abundant than large ones. The order of appearance of these trackmakers suggests that smaller & less agile species preferred soft ground, whereas larger carnivorous forms preferred a firmer substrate. From the measured print sizes, stride lengths, & pace angles, it was possible to estimate the hip height, body length, Froude numbers, & speed of each trackmaker. Illus.
Author: Scott Southworth
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 168
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Book Description
Author: Peter M. LeTourneau
Publisher: Columbia University Press
ISBN: 9780231126762
Category : Science
Languages : en
Pages : 426
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Book Description
Volume 2 provides an in depth study of the sedimentary rocks, stratigraphic architecture, early dinosaur and reptile footprints, and vertebrate fossils of the Central Atlantic Magmatic Province.
Author: Hans-Dieter Sues
Publisher: Columbia University Press
ISBN: 0231509413
Category : Science
Languages : en
Pages : 249
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Book Description
The Triassic period is generally viewed as the beginning of the Age of Dinosaurs. For paleontologists, however, it also marks the rise of the world's first modern land ecosystems. Over the past three decades, extensive, worldwide fieldwork has led to the discovery of many new species of Triassic animals and plants, suggesting that faunal and floral changes already began in the Middle Triassic and were more protracted than previously thought. The Late Triassic is a pivotal time in the evolution of life on land, with many of the major groups of present-day vertebrates and insects first appearing in the fossil record. This book provides the first detailed overview of life on land during the Triassic period for advanced students and researchers. Noted vertebrate paleontologists Hans-Dieter Sues and Nicholas C. Fraser also review the biotic changes of this period and their possible causes.
Author:
Publisher: University of Pennsylvania Press
ISBN: 0871693240
Category :
Languages : en
Pages : 86
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Book Description
Author: Biological Society of Washington
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 840
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Book Description
Vol. 1 issued also in Smithsonian Institution, miscellaneous collections, v. 25; Vol. 2 issued also as Smithsonian Institution, miscellaneous publication, no. 545.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 454
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Book Description
Author: Richard A. Sheppard
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 482
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Book Description
Author: David B. Weishampel
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 304
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Book Description
The great dinosaur bonebeds of the American and Canadian West are world famous for spectacular fossil yields. But the eastern U.S. and maritime Canada have been equally inportant to the study of these extraordinary creatures. Dinosaurs of the East Coast combines science, history, and modern reporting to offer a new look at an always fascinating subject. 29 line, 110 halftone illustrations.
Author:
Publisher:
ISBN:
Category : Sandstone
Languages : en
Pages : 480
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Book Description
