This guide rests on the highly skilled photography of Whiteley and the knowledge and technique of Kloc, revealed in 175 plates. These show principally complete trilobite specimens from rocks in New York State and occasionally from adjacent areas in the United States and Canada. Some 500 species recorded from finds in New York State are listed with the author’s name, date and bibliographic reference, the types and the institution in which they are held, and comments on specific characters and occurrence. This detail is prefaced by a discussion of naming trilobites, descriptive terms used, and the morphology, growth, anatomy and...

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