The Geological Society of America

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The Geological Society of America provides access to elements that are essential to the professional growth of earth scientists at all levels of expertise and from all sectors: academic, government, business, and industry.
Ammonoid taxonomic and morphologic recovery patterns after the Permian–Triassic
Alistair J. McGowan
Geology(2004),32(8):665
http://dx.doi.org/10.1130/G20462.1

The Geological Society of America
The Geological Society of America
GeoScienceWorld
GeoScience World