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