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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Schuchert, Charles, - Cooper, G. Arthur (Gustav Arthur),
    Publication info: New Haven, Conn, [Tuttle, Morehouse & Taylor Co.], 1932
    Holding Institution: MBLWHOI Library
    Subjects: Orthoidea  Paleontology  Paleozoic  Pentameroidea