kw.\*:("CALLIPTEREROIDEA")
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AN OVULIFEROUS CALLIPTEROID PLANT FROM THE HERMIT SHALE (LOWER PERMIAN) OF THE GRAND CANYON, ARIZONA.MAMAY SH; WATT AD.1971; GEOL. SURV. U.S.A., PROF. PAPER; USA; 1971, NUM. 0750-0051Miscellaneous
