Studies of Carboniferous crinoids. I. A group of Pennsylvanian crinoids from the Ardmore Basin; II. Delocrinids of the Brownsville Formation of Oklahoma; (con't)
40 pp., 5 pls.
(con't) III. Description of two new cromyocrinids from the Pennsylvanian of Nebraska; IV. On new species of Alcimocrinus and Ulrichicrinus from the Fayetteville Formation of Oklahoma
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