Hamaura cho 1 260 1

Chūō-ku, Japan

Hamaura cho 1 260 1

Chūō-ku, Japan
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Tazawa J.-I.,Hamaura cho 1 260 1 | Nakamura K.,Shinkotoni 9 1 4 3 403
Paleontological Research | Year: 2014

An early Permian (Kungurian) brachiopod fauna, consisting of 15 species in 15 genera, is described from the lower part of the Hosoo Formation of the Nakadaira area, South Kitakami Belt, northeastern Japan. The new species is Thamnosia nakadairensis. The Nakadaira fauna is a mixed Boreal--Tethyan fauna, with a close affinity to the early Permian brachiopod faunas of northwestern China (Xinjiang) and northern China (Inner Mongolia and Shanxi). The South Kitakami Belt was probably located in a transitional zone between the Boreal and Tethyan realms, developed along the eastern margin of North China (Sino--Korea) in the early Permian (Kungurian). © by the Palaeontological Society of Japan.


Tazawa J.-I.,Hamaura cho 1 260 1 | Araki H.,Ota 2 6 105
Paleontological Research | Year: 2017

A middle Permian (Wordian) brachiopod fauna, consisting of 19 species in 18 genera, is described from the lower part of the Kamiyasse Formation in Matsukawa, South Kitakami Belt, northeastern Japan. The Matsukawa fauna is a mixed Boreal-Tethyan brachiopod fauna that shows strong affinities with the middle Permian (Wordian-Capitanian) brachiopod faunas of central Japan (Hida Gaien Belt), eastern Russia (South Primorye), northeastern China (Heilongjiang), northern China (Inner Mongolia) and northwestern China (Xinjiang). The palaeobiogeographical data suggest that Proto-Japan, including South Kitakami, was part of a continental shelf along the northern and eastern margins of North China, located in the mid-latitudes of the Northern Hemisphere during the middle Permian (Wordian). © 2017 by the Palaeontological Society of Japan.


Tazawa J.-I.,Hamaura cho 1 260 1 | Okumura Y.,Kuzu Fossil Museum | Miyake Y.,Ichinomiya machi 331 1 | Mizuhara T.,Sugaya 629 1
Paleontological Research | Year: 2016

This paper describes a Kungurian (early Permian) brachiopod fauna consisting of 16 species in 16 genera from the lower part of the Nabeyama Formation of Ogama in the Kuzu area, Ashio Mountains (Mino Belt), central Japan. The fauna includes a new species, Acritosia ogamensis. The Ogama fauna is a tropical Panthalassan fauna showing strong affinity with the Wolfcampian - Leonardian (early Permian) fauna of West Texas, USA. © by the Palaeontological Society of Japan.


This study describes a brachiopod fauna, consisting of 12 species in 10 genera, from the Upper Permian (Wuchiapingian) Otori Formation of Okutadami, Joetsu Belt, Central Japan. The fauna includes a new species, Kochiproductus okutadamiensis. The Okutadami fauna, a Boreal fauna lacking Tethyan or Panthalassan elements, is the northernmost fauna of the Japanese Permian. Palaeobiogeographical data derived from the Okutadami fauna suggest that Okutadami was located at the northernmost area of Proto-Japan in the Late Permian. This conclusion supports a strike-slip tectonic model that describes large-scale sinistral strike-slip movement along the Tanakura Tectonic Line (TTL)-Median Tectonic Line (MTL) from the late Early Cretaceous to Palaeogene. © by the Palaeontological Society of Japan.


Tazawa J.-I.,Hamaura cho 1 260 1
Paleontological Research | Year: 2016

This paper describes the following three new species of brachiopods from the middle Permian (Wordian) of the Kamiyasse-Imo area, South Kitakami Belt, northeastern Japan: Isogramma nakamurai, Globiella kamiyassensis and Rhipidomella magna. The newly described species are regarded as additional components of the Wordian mixed Boreal-Tethyan brachiopod fauna of the South Kitakami Belt. © by the Palaeontological Society of Japan.


Tazawa J.-I.,Hamaura cho 1 260 1 | Kaneko N.,Geological Survey of Japan
Paleontological Research | Year: 2016

We describe two species of reticularioid spiriferid brachiopod, Permophricodothyris grandis (Chao) and Permophricodothyris squamularioides (Huang), from the lower part of the Kamiyasse Formation (Wordian), Kamiyasse-Imo area, South Kitakami Belt, northeastern Japan. Permophricodothyris is known from the middle to upper Permian of the Tethyan region, especially from the upper Permian of South China. The two species from the Kamiyasse-Imo area are representative Tethyan elements of the middle Permian brachiopod fauna of the South Kitakami Belt. © by the Palaeontological Society of Japan.


Tazawa J.-I.,Hamaura cho 1 260 1 | Kaneko N.,Geological Survey of Japan | Suzuki C.,Nishi 2 6 3 | Hasegawa S.,Yachiyo Engineering Co.
Paleontological Research | Year: 2015

This study describes a brachiopod fauna, consisting of 15 species in 15 genera, from the lower part of the Takakurayama Formation at the locality T1 in the Takakurayama area, Abukuma Mountains, South Kitakami Belt, northeastern Japan. The fauna is considered to be late Permian (Wuchiapingian) in age based on the occurrence of Haydenella wenganensis, Costatumulus tazawai and Pterospirifer alatus. In terms of palaeobiogeography, the Takakurayama (T1) fauna is a mixed Boreal-Tethyan fauna with Chonetinella, Lamnimargus, Megousia, Costalumulus, Yakovlevia, Neospirifer, Gypospirifer, Alispiriferella and Pterospirifer as the Boreal (anti-tropical) elements, and Haydenella, Transennatia and Echinauris as the Tethyan (tropical) elements. The fauna is allied with the middle-late Permian brachiopod fauna of South Primorye, Far Eastern Russia. © by the Palaeontological Society of Japan.


Afanasjeva G.A.,Russian Academy of Sciences | Jun-ichi T.,Hamaura cho 1 260 1 | Tomohiko S.,Hamaura cho 1 260 1
European Spine Journal | Year: 2015

New chonetid species Rugaria semicircularis sp. nov. and Chonetinetes elongatus sp. nov. from the subfamily Rugosochonetinae, family Rugosochonetidae are described and Micraphelia sp. from the subfamily Undulellinae, family Rugosochonetidae, and Mongolochonetes sp. from the subfamily Delepineinae, family Daviesiellidae, are determined from the Sakamotozawa Formation, Lower Permian and Kanokura and Kamiyasse Formations, Middle Permian of the South Kitakami Belt, Northeast Japan. © 2015, Pleiades Publishing, Ltd.

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