Crinoid Studies, Parts III-VII. (III. Apographiocrinus arcuatus, new species from the Missouri Series of Oklahoma; IV. Exocrinus, new genus from the Pennsylvanian of Oklahoma
Crinoid, Apographiocrinus arcuatus, Missouri Series, Oklahoma, Exocrinus, Pennsylvanian
42 pp., 7 pls.
Rest of title: V. Allosocrinus, a new crinoid genus from the Pennsylvanian of Oklahoma; VI. Allagecrinus copani, new species from the Pennsylvanian of Oklahoma; VII. New species of crinoids from southeastern Kansas).
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