A revision of Grabau and Shimer's "North American Index Fossils," published in 1915. Approximately 7,500 species are described and figured. Contains over 9,400 illustrations on 303 full page plates. Selected bibliographies for all of the larger divisions are given. Considers geographic as well as geologic distribution.
A revision of Grabau and Shimer's "North American Index Fossils," published in 1915. Approximately 7,500 species are described and figured. Contains over 9,400 illustrations on 303 full page plates. Selected bibliographies f...
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