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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Klein, Carina. - Landman, Neil H.
    Publication info: New York, NY, American Museum of Natural History, [2019]
    Holding Institution: American Museum of Natural History Library
    Subjects: Ammonoidea  Cretaceous  Development  Great Plains  Mollusks, Fossil  Ontogeny  Paleontology  Scaphites whitfieldi  Variation  West (U.S.)