Osborn, Henry F. & Mook, Charles C.; Camarasaurus, Amphiccelias, and other Sauropods of Cope. American Museum of Natural History Memoir, New Series, vol. 3#3, 1921. Large quarto, pp. 150, 127 figures and 25 plates (many folded).
In later wraps, cover title preserved, binding is tight text and plates are clean. In very good condition.
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In 1902 the Cope Collection of Fossil reptiles was presented to the AMNH by Jessup. It included all of Cope's types and other dinosaur material from the area of Canyon City, Colorado. The above offered memoir is an iconographic description of the types and other Sauropoda material in that collection. Also included is a detailed description of the sites in the Canyon City area. The Canyon City locality was originally discovered in the spring of 1877 by O. W. Lucas, Superintendent of Public Schools in Canyon City. He sent some of the large bones to Cope. These bones were used for Cope's original description of Camarasssaurus in 1877. Cope then had parties begin extensive quarrying and collecting at the sites. Copes's descriptions were being superceded by Marsh's works. To counter Marsh's studies, Osborn and his colleagues detailed and published this monograph on Cope's Camarassaurus. The monograph is now considered a classic in dinosaur illustrations being used in a study. There are 127 illustrations in the text and 26 plates. The line drawings and shaded wash drawings are quite detailed. The paintings were by the noted artist Erwin Christman and are incredibly fine. The work will remain a classic.