51. On the Stratigraphical Significance of Pecten naganumanus Yokoyama, and Its Bearing on the Japanese Neogene
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Since the well-known scallop, <I>Pecten naganumanus</I> was described and figured by Dr. M. YOKOYAMA in 1920, it was from time time reported from many regions by different authors. At the present time its known southernmost limit in distribution is in Philippine Islands, while its northernmost one is in the Setana series of Hokkaidô, northern Japan. The interesting geographical distribution and recent gift of several specimens of <I>Pecten naganumanus</I> from the Philippine Islands by Mr. Wataru HASHIMOTO the senior author, has led the writers to this short note.
- 日本古生物学会の論文
日本古生物学会 | 論文
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