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Project 5271: J. C. Brower. 2001. Flexible crinoids from the Upper Ordovician Maquoketa Formation of the northern midcontinent and the evolution of early flexible crinoids. Journal of Paleontology. 75 (2):370-382.
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This project has 4 media. Displaying 4 media.
M904704
† Cupulocrinus minimus
whole specimen (fossil)
M904705
† Protaxocrinus girardeau
whole specimen (fossil)
M904706
† Clidochirus americanus
whole specimen (fossil)
M904707
† Clidochirus ulrichi
whole specimen (fossil)