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Keywords from Image Description:
The Crinoidea flexibilia . Spbihger Ghinodea Flexibilia Plate LI ff ' iff ' ill fr ' ChapmHndel Keliot psCoBoSc Plate LI Illustration biodiversitylibrary org title Springer Frank Biodiversity Heritage Library The Crinoidea flexibilia with an atlas of and plates Crinoidea Fossil Harvard University MCZ Ernst Mayr