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Keywords from Image Description:
The North American Crinoidea camerata PLATE XL . RINID ' rtm 'V pr vr ' PLATE XL Illustration Atlas biodiversitylibrary org title Springer Frank Wachsmuth Charles Biodiversity Heritage Library National Fossil Day The North American Crinoidea camerata atlas Crinoidea Fossil Echinodermata North America Smithsonian Institution