kw.\*:("PROCTOTHYLACOCRINUS")
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PROCTOTHYLACOCRINUS BERRYORUM A NEW CRINOID FROM THE MIDDLE DEVONIAN ARKONA SHALE OF ONTARIO.KESLING RY.1971; CONTRIB. MUS. PALEONTOL., UNIV. MICHIGAN; USA; 1971, VOL. 23, NUM. 0021, P. 343 A 347Miscellaneous
