Where: Japan (35.4° N, 136.6° E: paleocoordinates 23.1° N, 110.6° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Yabeina globosa foram zone, Akasaka Formation, Capitanian (265.1 - 259.9 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, silty packstone
Size class: macrofossils
Collected by T. Asami, A. Hosono
• Specimens in Asami Fossil Museum
Primary reference: K. Nakazawa. 2007. Minute bivalve fossils from the Permian Akasaka Limestone, Central Japan, (Appendix) Description of a new species of Pernopecten. Earth Science (Chikyu Kagaku) 61:187-201 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 109667: authorized by Matthew Clapham, entered by Matthew Clapham on 20.05.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Polyplacophora | |
Crassitudochiton plakos n. gen. n. sp.1
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Gifuchiton pentagonus n. gen. n. sp.1
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Gastropoda | |
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Shwedagonia collabra2, Glabrocingulum sp.2, "Zhonghuaspira yokoyamai" = Nipponomaria yokoyamai2, "Glyptotomaria (? Dictyotomaria) sp." = Dictyotomaria2
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Coeloconulus panae n. gen. n. sp.2
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"Bellerophon jonesianus" = Waagenella jonesianus2
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Anematina parva n. sp.2
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Anomphalus japonicus n. sp.2
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Protorcula permiana n. sp.2
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Yochelsonistylus felixi n. gen. n. sp.2, Yochelsonistylus seussae n. sp.2, ? Vebericochlis sp.2, Vebericochlis spp.2, Vebericochlis mazaevi n. sp.2, Orthonema "sp. 1"2, Orthonema "sp. 2"2
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Goniasma fortecarinata n. sp.2, ? Goniasma nodifera n. sp.2, Akasakiella yabei2, Cerithioides sp.2, Cerithioides angulatum n. sp.2, Cerithiozone ornata n. gen. n. sp.2, Costataenia hayasakai n. gen. n. sp.2, Trypanocochlea parva n. sp.2, Stegocoelia akasakaensis n. sp.2, Platyzona eulkaiensis2
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Palaeostylus "sp. 1"2, Palaeostylus "sp. 2"2, Palaeostylus minutus n. sp.2, ? Palaeostylus irregularis n. sp.2, Palaeostylus aff. dussaulti2, Palaeostylus pupoides2, Palaeostylus lateapicatus n. sp.2, Palaeostylus attenuatus n. sp.2, Knightella sp.2, Knightella hydrobiformis n. sp.2
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Acteonina koizumii n. sp.2
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Naticopsis "sp. 1"2, Naticopsis "sp. 2"2, ? Naticopsis "operculum A"2, ? Naticopsis "operculum B"2, Naticopsis cf. tschernyschewi2
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Bivalvia | |
Grammatodon (Cosmetodon) obsoletiformis Hayasaka 1925 clam | |
Pernopecten terukoae n. sp.
Pernopecten terukoae n. sp. Nakazawa 2007 scallop | |
? Scaldia sp. de Ryckholt 1847 clam | |
"Vacunella" sp. Waterhouse 1965 clam | |
Nuculopsis sp. Girty 1912 nut clam |