神西湖周辺産の貝化石について : 島根県産軟体動物化石(その3)

The molluscan fossils of the Miocene Fujina Formation was described by YOKOYAMA (1913, 1923), NOMURA and HATAI (1939), SUEHIRO (1979) and OGASAWARA and NOMURA (1980). They studied specimens obtained from the hilly area of the southern border of Lake Shinji, where the Fujina Formation is typically distributed.
The fossil localities reported in this paper are situated about 30 km west of Fujina, Tamayu Town, the type locality of the Formation, and the fossil bearing beds have been regarded as the equivalent of the Formation. However, some molluscan fossils newly collected from these localities are ones that have not ever been reported from the Fujina Formation. Then, their occurrence is an interesting problem from the view point of Neogene stratigraphy of the Izumo district, and is described in the paper in addition to fossil description.
The writer wishes to express his hearty thanks to Dr. Iwao KOBAYASHI of Niigata University for his invaluable suggestions, and to Dr. Takao TOKUOKA of Shimane University for reading the manuscript. He is also indebted to Mr. Takeshi NAKAMURA, a student of Shimane University, for his assistance in the field. This study was supported in part by a Grant-in-aid of the Ministry of Education (no. 57740440).
), NOMURA and HATAI (1939), SUEHIRO (1979) and OGASAWARA and NOMURA (1980). They studied specimens obtained from the hilly area of the southern border of Lake Shinji, where the Fujina Formation is typically distributed.
The fossil localities reported in this paper are situated about 30 km west of Fujina, Tamayu Town, the type locality of the Formation, and the fossil bearing beds have been regarded as the equivalent of the Formation. However, some molluscan fossils newly collected from these localities are ones that have not ever been reported from the Fujina Formation. Then, their occurrence is an interesting problem from the view point of Neogene stratigraphy of the Izumo district, and is described in the paper in addition to fossil description.
The writer wishes to express his hearty thanks to Dr. Iwao KOBAYASHI of Niigata University for his invaluable suggestions, and to Dr. Takao TOKUOKA of Shimane University for reading the manuscript. He is also indebted to Mr. Takeshi NAKAMURA, a student of Shimane University, for his assistance in the field. This study was supported in part by a Grant-in-aid of the Ministry of Education (no. 57740440).