North American Index Fossils, Invertebrates: Protozoa, Porifera, Hydrozoa, Anthozoa, Bryozoa, Brachi

A comprehensive guide to North American fossils, written by two of the leading experts in the field. Amadeus William Grabau and Hervey Woodburn Shimer cover everything from protozoa to gastropoda, providing detailed descriptions and illustrations of each species. This book is an absolute must-have for anyone interested in paleontology or the natural history of North America.

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