Ichihashi Quarry, Kinshozan, Akasaka (Permian of Japan)

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

Show authors, comments, and common names
Bivalvia
 Nuculida - Nuculidae
Nuculopsis sp.
Nuculopsis sp. Girty 1912 nut clam
 Pectinida - Entoliidae
Pernopecten terukoae n. sp.
Pernopecten terukoae n. sp. Nakazawa 2007 scallop
 Arcida - Parallelodontidae
Grammatodon (Cosmetodon) obsoletiformis
 Cardiidia - Sanguinolitidae
"Vacunella" sp.
"Vacunella" sp. Waterhouse 1965 clam
 Pholadomyida - Edmondiidae
? Scaldia sp.
? Scaldia sp. de Ryckholt 1847 clam
Polyplacophora
 Neoloricata - Leptochitonidae
Gifuchiton pentagonus n. gen. n. sp.1
Gifuchiton pentagonus n. gen. n. sp.1 Hoare and Karasawa 2008 chiton
 Neoloricata - Crassitudochitonidae
Crassitudochiton plakos n. gen. n. sp.1
Crassitudochiton plakos n. gen. n. sp.1 Hoare and Karasawa 2008 chiton
 Neoloricata - Gryphochitonidae
Gryphochiton asamiae n. sp.1, Aaptochiton pustulosus n. gen. n. sp.1
Gryphochiton asamiae n. sp.1 Hoare and Karasawa 2008 chiton
Aaptochiton pustulosus n. gen. n. sp.1 Hoare and Karasawa 2008 chiton
Gastropoda
 Bellerophontida - Bellerophontidae
"Bellerophon jonesianus" = Waagenella jonesianus2
"Bellerophon jonesianus" = Waagenella jonesianus2 de Koninck 1863 snail
 Bellerophontida - Euphemitidae
Warthia sp.2
Warthia sp.2 Waagen 1880 snail
 Murchisoniina - Gosseletinidae
"Zhonghuaspira yokoyamai" = Nipponomaria yokoyamai2, Shwedagonia collabra2, Glabrocingulum sp.2, "Glyptotomaria (? Dictyotomaria) sp." = Dictyotomaria2
"Zhonghuaspira yokoyamai" = Nipponomaria yokoyamai2 Hayasaka 1943 snail
Shwedagonia collabra2 Batten 1972 snail
Glabrocingulum sp.2 Thomas 1940 snail
"Glyptotomaria (? Dictyotomaria) sp." = Dictyotomaria2 Knight 1945 snail
 Murchisoniina - Phymatopleuridae
Worthenia sp.2
Worthenia sp.2 de Koninck 1883 snail
 Murchisoniina - Portlockiellidae
? Shansiella sp.2
? Shansiella sp.2 Yin 1932 snail
 Murchisoniina - Soleniscidae
Soleniscus sp.2, Nanochilina japonica n. sp.2, Strobeus dongluoensis2, Bulimorpha melanioides2
Soleniscus sp.2 Meek and Worthen 1860 snail
Nanochilina japonica n. sp.2 Nützel and Nakazawa 2012 snail
Strobeus dongluoensis2 Pan and Yu 1993 snail
Bulimorpha melanioides2 Mansuy 1914 snail
 Murchisoniina - Palaeozygopleuridae
Medfrazyga rectecostata n. sp.2, Medfrazyga convexa n. sp.2
Medfrazyga rectecostata n. sp.2 Nützel and Nakazawa 2012 snail
Medfrazyga convexa n. sp.2 Nützel and Nakazawa 2012 snail
 Caenogastropoda -
Caenogastropoda indet.2
 Caenogastropoda - Meekospiridae
Heterosubulites fusiformis n. sp.2, Ceraunocochlis sp.2
Heterosubulites fusiformis n. sp.2 Nützel and Nakazawa 2012 snail
Ceraunocochlis sp.2 Knight 1931 snail
 Cerithimorpha - Orthonemidae
Palaeostylus "sp. 1"2, Palaeostylus "sp. 2"2, ? Palaeostylus irregularis n. sp.2, Palaeostylus attenuatus n. sp.2, Palaeostylus pupoides2, Palaeostylus aff. dussaulti2, Palaeostylus minutus n. sp.2, Palaeostylus lateapicatus n. sp.2, Knightella sp.2, Knightella hydrobiformis n. sp.2
Palaeostylus "sp. 1"2 Mansuy 1914 snail
Palaeostylus "sp. 2"2 Mansuy 1914 snail
? Palaeostylus irregularis n. sp.2 Nützel and Nakazawa 2012 snail
Palaeostylus attenuatus n. sp.2 Nützel and Nakazawa 2012 snail
Palaeostylus pupoides2 Mansuy 1914 snail
Palaeostylus aff. dussaulti2 Mansuy 1914 snail
Palaeostylus minutus n. sp.2 Nützel and Nakazawa 2012 snail
Palaeostylus lateapicatus n. sp.2 Nützel and Nakazawa 2012 snail
Knightella sp.2 Longstaff 1933 snail
Knightella hydrobiformis n. sp.2 Nützel and Nakazawa 2012 snail
 Zygopleuroidea -
? Plicacerithium sp.2
? Plicacerithium sp.2 Gerasimov 1992 snail
 Zygopleuroidea - Protorculidae
Protorcula permiana n. sp.2
Protorcula permiana n. sp.2 Nützel and Nakazawa 2012 snail
 Caenogastropoda - Coelostylinidae
Protostylus "sp. 1"2, ? Protostylus "sp. 2"2, ? Omphaloptycha sp.2
? Omphaloptycha sp.2 Ammon 1878 snail
 Caenogastropoda - Orthonematidae
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
Orthonema "sp. 1"2 Meek and Worthen 1862 snail
Orthonema "sp. 2"2 Meek and Worthen 1862 snail
Yochelsonistylus seussae n. sp.2 Nützel and Nakazawa 2012 snail
Yochelsonistylus felixi n. gen. n. sp.2 Nützel and Nakazawa 2012 snail
? Vebericochlis sp.2 Licharev 1967 snail
Vebericochlis spp.2 Licharev 1967 snail
Vebericochlis mazaevi n. sp.2 Nützel and Nakazawa 2012 snail
 Caenogastropoda - Goniasmatidae
? Goniasma nodifera n. sp.2, Goniasma fortecarinata n. sp.2, Akasakiella yabei2, Trypanocochlea parva n. sp.2, Platyzona eulkaiensis2, Cerithiozone ornata n. gen. n. sp.2, Stegocoelia akasakaensis n. sp.2, Cerithioides sp.2, Cerithioides angulatum n. sp.2, Costataenia hayasakai n. gen. n. sp.2
? Goniasma nodifera n. sp.2 Nützel and Nakazawa 2012 snail
Goniasma fortecarinata n. sp.2 Nützel and Nakazawa 2012 snail
Akasakiella yabei2 Hayasaka 1943 snail
Trypanocochlea parva n. sp.2 Nützel and Nakazawa 2012 snail
Platyzona eulkaiensis2 Reed 1927 snail
Cerithiozone ornata n. gen. n. sp.2 Nützel and Nakazawa 2012 snail
Stegocoelia akasakaensis n. sp.2 Nützel and Nakazawa 2012 snail
Cerithioides sp.2 Haughton 1859 snail
Cerithioides angulatum n. sp.2 Nützel and Nakazawa 2012 snail
Costataenia hayasakai n. gen. n. sp.2 Nützel and Nakazawa 2012 snail
 Cerithioidea - Acanthonematidae
Callispira "sp. 1"2, Callispira "sp. 2"2
Callispira "sp. 1"2 Nelson 1947 snail
Callispira "sp. 2"2 Nelson 1947 snail
 Sorbeoconcha - Acteoninidae
Acteonina koizumii n. sp.2
Acteonina koizumii n. sp.2 Nützel and Nakazawa 2012 snail
 Sorbeoconcha - Propupaspiridae
? Permocerithium sp.2, Permocerithium nudum n. gen. n. sp.2
? Permocerithium sp.2 Nützel and Nakazawa 2012 snail
Permocerithium nudum n. gen. n. sp.2 Nützel and Nakazawa 2012 snail
 Patellogastropoda - Patellidae
? Patella sp.2
? Patella sp.2 Linnaeus 1758 limpet
 Cycloneritida - Trachyspiridae
Trachyspira magna2, Trachydomia cf. nodosa2
Trachyspira magna2 Hayasaka 1937 snail
Trachydomia cf. nodosa2 Meek and Worthen 1860 snail
 Trochoidea - Trochidae
Coeloconulus panae n. gen. n. sp.2
Coeloconulus panae n. gen. n. sp.2 Nützel and Nakazawa 2012 top snail
 Seguenzioidea - Eucyclidae
Eucycloscala sp.2, Trochonodus permianus n. sp.2
Eucycloscala sp.2 Cossmann 1895 snail
Trochonodus permianus n. sp.2 Nützel and Nakazawa 2012 snail
 Neritoidea - Neritariidae
? Asamiella "operculum C"2, Asamiella japonica2
? Asamiella "operculum C"2 Nützel and Nakazawa 2012 snail
Asamiella japonica2 Hayasaka 1943 snail
 Neritoidea - Naticopsidae
Naticopsis "sp. 1"2, Naticopsis "sp. 2"2, ? Naticopsis "operculum A"2, ? Naticopsis "operculum B"2, Naticopsis cf. tschernyschewi2
Naticopsis "sp. 1"2 M'Coy 1844 snail
Naticopsis "sp. 2"2 M'Coy 1844 snail
? Naticopsis "operculum A"2 M'Coy 1844 snail
? Naticopsis "operculum B"2 M'Coy 1844 snail
Naticopsis cf. tschernyschewi2 Yakowlew 1899 snail
 Heterostropha - Streptacididae
? Streptacis sp.2, Streptacis orientalis n. sp.2
? Streptacis sp.2 Meek 1871 snail
Streptacis orientalis n. sp.2 Nützel and Nakazawa 2012 snail
 Euomphalina - Euomphalidae
Araeonema panthalassica n. sp.2, Straparollus sp.2
Araeonema panthalassica n. sp.2 Nützel and Nakazawa 2012 snail
Straparollus sp.2 de Montfort 1810 snail
 Euomphalina - Elasmonematidae
Anematina parva n. sp.2
Anematina parva n. sp.2 Nützel and Nakazawa 2012 snail
 Euomphalina - Anomphalidae
Anomphalus japonicus n. sp.2
Anomphalus japonicus n. sp.2 Nützel and Nakazawa 2012 snail
 Euomphalina - Microdomatidae
Glyptospira cf. tricostata2
Glyptospira cf. tricostata2 Erwin 1988 snail
 Euomphalina - Pseudophoridae
Pseudophorus sp.2
Pseudophorus sp.2 Meek 1873 snail
1Hoare and Karasawa 2008; 2Nützel and Nakazawa 2012