SUMMER READING SALE! Through Friday, June 12, use code PENN-SUMMER26 to save 40% on available titles!

(Please note that the three-volume set of Greater Philadelphia is excluded, although the individual volumes are eligible for the discount.)

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E. C. Case

Books by the Author

Cover of 'History of the Pelycosauria, with a Description of the Genus Dimetrodon, Cope'

History of the Pelycosauria, with a Description of the Genus Dimetrodon, Cope

Cover of 'Census of the Determinable Genera of the Stegocephalia'

Census of the Determinable Genera of the Stegocephalia

Cover of 'Morphology of the Skull of the Pelycosaurian Genus Dimetrodon'

Morphology of the Skull of the Pelycosaurian Genus Dimetrodon