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 (264.3 - 259.5 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
| |
Gifuchiton pentagonus n. gen. n. sp.1
| |
| |
Gastropoda | |
| |
Anematina parva n. sp.2
| |
| |
| |
Anomphalus japonicus n. sp.2
| |
| |
| |
Orthonema "sp. 1"2, Orthonema "sp. 2"2, Yochelsonistylus seussae n. sp.2, Yochelsonistylus felixi n. gen. n. sp.2, ? Vebericochlis sp.2, Vebericochlis spp.2, Vebericochlis mazaevi n. sp.2
| |
Platyzona eulkaiensis2, Cerithioides sp.2, Cerithioides angulatum n. sp.2, Akasakiella yabei2, ? Goniasma nodifera n. sp.2, Goniasma fortecarinata n. sp.2, Stegocoelia akasakaensis n. sp.2, Cerithiozone ornata n. gen. n. sp.2, Trypanocochlea parva n. sp.2, Costataenia hayasakai n. gen. n. sp.2
| |
| |
| |
Acteonina koizumii n. sp.2
| |
| |
| |
Protorcula permiana n. sp.2
| |
Palaeostylus "sp. 1"2, Palaeostylus "sp. 2"2, Palaeostylus pupoides2, Palaeostylus minutus n. sp.2, Palaeostylus attenuatus n. sp.2, Palaeostylus lateapicatus n. sp.2, Palaeostylus aff. dussaulti2, ? Palaeostylus irregularis n. sp.2, Knightella sp.2, Knightella hydrobiformis n. sp.2
| |
| |
"Bellerophon jonesianus" = Waagenella jonesianus2
| |
| |
Coeloconulus panae n. gen. n. sp.2
| |
| |
| |
| |
"Zhonghuaspira yokoyamai" = Nipponomaria yokoyamai2, Glabrocingulum sp.2, Shwedagonia collabra2, "Glyptotomaria (? Dictyotomaria) sp." = Dictyotomaria2
| |
| |
| |
Naticopsis "sp. 1"2, Naticopsis "sp. 2"2, ? Naticopsis "operculum A"2, ? Naticopsis "operculum B"2, Naticopsis cf. tschernyschewi2
| |
| |
| |
Bivalvia | |
Nuculopsis sp. Girty 1912 nut clam | |
? Scaldia sp. de Ryckholt 1847 clam | |
"Vacunella" sp. Waterhouse 1965 clam | |
Pernopecten terukoae n. sp.
Pernopecten terukoae n. sp. Nakazawa 2007 scallop | |
Grammatodon (Cosmetodon) obsoletiformis Hayasaka 1925 clam |