2024-03-28T16:09:06Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00006877
2022-12-15T03:40:06Z
176:177:178:199
453:456
A Middle Permian Boreal-Tethyan mixed brachiopod fauna from Yakejima, southern Kitakami Mountains, NE Japan
A Middle Permian Boreal-Tethyan mixed brachiopod fauna from Yakejima, southern Kitakami Mountains, NE Japan
Tazawa, Jun-ichi
54524
Takizawa, Fuminori
54525
Kamada, Kotaro
54526
Boreal-Tethyan mixed fauna
brachiopods
Permian
southern Kitakami Mountains
Yakejima
A collection of brachiopods is described from the Middle Permian Oyakejima Formation of the Yakejima area, southern Kitakami Mountains, northeast Japan. This fauna consists of the following nine species: Waagenites soochowensis, Transennatia gratiosa, Kochiproductus sp., Compressoproductus compressus, Rhynchopora tchernyshae, Stenoscisma margaritovi, Martinia sp., Spiriferella cf. lita and Cleiothyridina subexpansa. The Yakejima fauna, including a before-described species Leptodus sp., is characterized by the mixture of the Boreal-type genera, Kochiproductus, Stenoscisma and Spiriferella, and the Tethyan-type genera, Transennatia, Compressoproductus and Leptodus. The occurrence of the Middle Permian Boreal-Tethyan mixed brachiopod fauna from the southern Kitakami Mountains provides evidence that this region was placed on the transitional zone between the Boreal and Tethyan Realms, nearby the Sino-Korean block, in the Middle Permian time.
departmental bulletin paper
新潟大学理学部
2000-03
application/pdf
Science reports of Niigata University. (Geology)
15
1
21
Science reports of Niigata University. (Geology)
AA11436808
13491237
https://niigata-u.repo.nii.ac.jp/record/6877/files/15_1-21.pdf
eng