Clark, A. H. (1913). Post-Paleozoic Crinoidea. In: Zittel, Karl Alfred von. 1913. Text-book of paleontology: Adapted from the German and transl. & edited by C.R. Eastman, 2nd ed. Macmillan. London. 839 p., 1594 fig. pp. 227-242.
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Clark, A. H.
1913
Post-Paleozoic Crinoidea
In: Zittel, Karl Alfred von. 1913. Text-book of paleontology: Adapted from the German and transl. & edited by C.R. Eastman, 2nd ed. Macmillan. London. 839 p., 1594 fig.
