Three interesting Carboniferous bryozoans from the Akiyoshi Limestone Group,Japan.

Sakagami, Sumio; Sugimura, Akihiro

doi:10.2183/pjab.59.39

Cited by 3 publications

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“…The essential characters of the present form, except for slightly larger diameters of zooecia and mesozooecia of the fragmentary specimen, may be identical with Dyscritella shigeyasuensis (Sakagami and Sugimura 2000). The species was dated as Late Midian (Middle Permian) based on the associated fusulinid fauna, including Yabeina (Lepidolina) shiraiwensis.…”

Section: Remarksmentioning

confidence: 65%

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Late Paleozoic and Triassic bryozoans from the Tethys Himalaya (N India, Nepal and S Tibet)

Sakagami¹,

Sciunnach

Garzanti³

2006

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New findings of Late Paleozoic and Triassic bryozoans from the Tethys Himalaya are reported. Fifteen species, including three undetermined, were described, while determinations at order, family or genus level were obtained on fragmentary material. The studied bryozoans were framed in a solid lithostratigraphic scheme spanning across the Tethys Himalaya for over 1500 km, from NW India (Zanskar and Spiti) through Nepal (Dolpo and Manang) to South Tibet; they are concentrated in correlatable stratigraphic intervals corresponding to the Upper Devonian-Tournaisian, Bashkirian, Sakmarian, Midian and Lower Norian. This study allowed us to integrate bryozoan occurrences reported from the literature, mostly referring to the Tournaisian, Bashkirian and Early Norian, and to refine the available biostratigraphic dates. Bryozoan-rich intervals are interpreted as associated to long-term transgressions, in turn driven by major climatic and/or tectonic events. Cosmopolitan genera which prevail in the Paleozoic, are replaced by provincial forms after the Triassic crisis.

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Section: Remarksmentioning

confidence: 65%

“…Dyscritella shigeyasuensis was described by Sakagami and Sugimura (2000) from the Yabeina-Lepidolina zone of the Akiyoshi Limestone Group (southwest Japan). This zone is characterised by fusulinids (Lepidolina multiseptata shiraiwensis, etc.)…”

Section: South Tibetmentioning

confidence: 99%

Late Paleozoic and Triassic bryozoans from the Tethys Himalaya (N India, Nepal and S Tibet)

Sakagami¹,

Sciunnach

Garzanti³

2006

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Bryozoen der oberpermischen Zechstein-Formation von Deutschland

Ernst

2001

Senckenbergiana Lethaea

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The investigated bryozoan fauna of the Upper Permian Zechstein Formation includes 17 species of 9 genera, belonging mainly to the fenestellids and trepostomids and one species belonging to the tubuliporids, Corynotrypa voigtiana (KING 1850). Three new species ate described (Dyseritella microstoma sp. nov., Ulrichotrypella incrustata sp. nov., and Kingopora baderi sp. nov.). The Zechstein species of the genera Acanthocladia, Synocladia, Penniretepora and Kalvariella display close resemblance in their internal morphology, and their derivation from a common ancestor is suggested. The distribution of the bryozoans in the Zechstein Sea was apparently controlled by factors such as lateral sedimentation, distribution of microbial mats and quality of substrates.

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Hinaclema, a new Carboniferous bryozoan genus from the Hina Limestone, Southwest Japan.

Sakagami

Sugimura

1987

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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Three interesting Carboniferous bryozoans from the Akiyoshi Limestone Group,Japan.

Cited by 3 publications

References 1 publication

Late Paleozoic and Triassic bryozoans from the Tethys Himalaya (N India, Nepal and S Tibet)

Late Paleozoic and Triassic bryozoans from the Tethys Himalaya (N India, Nepal and S Tibet)

Bryozoen der oberpermischen Zechstein-Formation von Deutschland

Hinaclema, a new Carboniferous bryozoan genus from the Hina Limestone, Southwest Japan.

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