kw.\*:("POLYPTYCHOCERAS")
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AN INTERESTING MODE OF OCCURENCE OF POLYPTYCHOCERAS (CRETACEOUS HETEROMORPH AMMONOID)MATSUMOTO T; NIHONGI M.1979; PROC. JAP. ACAD., B; JPN; DA. 1979; VOL. 55; NO 3; PP. 115-119; BIBL. 6 REF.; 3 ILL.Article
