National Audubon Society: Field Guide to Fossils Hiking Books while the canyons descend below

while the canyons descend below the page surface

Arranged by category and boasting unequalled insight and detail

and reveal the secrets of this rugged terrain

showing flowers close-up and in their natural surroundings

as "among the very best in the American Trail series

National Audubon Society: Field Guide to Fossils Hiking Books while the canyons descend belowBy: National Audubon Society A detailed field guide to make fossil identification easy! This first all photographic field guide to fossils features 474 full color identification pictures of fossilized sponges, corals, trilobites, shells, teeth, and bones. Also included are 33 photographs of fossil bearing rocks and outcrop formations, plus 15 maps. It also overviews the geologic ages and history of life on earth from the Precambrian Eon to the