Miharanoro NSM PCL 15-53-1, Tojo Town, Hiroshima Prefecture (Permian of Japan)

Where: Japan (34.9° N, 133.3° E: paleocoordinates 15.7° N, 100.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pseudoschwagerina miharanoensis foram zone, Uyamanoro Formation, Asselian (298.9 - 295.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, massive, gray limestone

Size class: macrofossils

Collected by I. Nishikawa

• Repository: National Science Museum, Tokyo (NSM) and Tohoku University Museum (IGPS)

Primary reference: S. Niko, T. Nishida, and T. Hamada. 1993. Aktastioceras nishikawai n sp, a first Permian bactritoid cephalopod from Japan. Journal of Paleontology 67:314-316 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116014: authorized by Matthew Clapham, entered by Matthew Clapham on 05.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Ammonoids illustrated in Hayasaka and Nishikawa, 1962
Show authors, comments, and common names
Cephalopoda
 Bactritida - Parabactritidae
Aktastioceras nishikawai n. sp.
Aktastioceras nishikawai n. sp. Niko et al. 1993
 Goniatitida - Neoicoceratidae
Eoasianites cf. subhanieli1
Eoasianites cf. subhanieli1 Ruzhentsev 1933 ammonite
 Goniatitida - Adrianitidae
Emilites cf. prosperus1
Emilites cf. prosperus1 Ruzhentsev 1978 ammonite
 Goniatitida - Marathonitidae
Almites hayasakai2
Almites hayasakai2 Ehiro and Ozawa 2020 ammonite
 Goniatitida - Somoholitidae
Somoholites miharanoroensis n. sp.1
Somoholites miharanoroensis n. sp.1 Ehiro et al. 2014 ammonite
 Goniatitida - Agathiceratidae
Agathiceras sp.1
Agathiceras sp.1 Gemmellaro 1887 ammonite
 Goniatitida - Bisatoceratidae
Neoglaphyrites discoidalis n. sp.1
Neoglaphyrites discoidalis n. sp.1 Ehiro et al. 2014 ammonite
 Prolecanitida - Pronoritidae
Metapronorites sp.1, Metapronorites cf. timorensis1
Metapronorites sp.1 Librovitch 1938 ammonite
Metapronorites cf. timorensis1 Haniel 1915 ammonite
Strophomenata
 Productida - Monticuliferidae
Compressoproductus flabellatus3, Spitzbergenia sp.3
Compressoproductus flabellatus3 Cooper and Grant 1975
Spitzbergenia sp.3 Kotljar 1977
 Productida - Productellidae
Tubaria sp.3
 Productida - Echinoconchidae
Echinoconchus punctatus3, Karavankina typica3
Karavankina typica3 Ramovs 1966
Rhynchonellata
 Spiriferida - Choristitidae
Choristites sp.3, Choristites fritschi3
Choristites sp.3 Fischer de Waldheim 1825
Choristites fritschi3 Schellwien 1892
 Spiriferida - Martiniidae
Martinia cruenta3
Martinia cruenta3 Cooper and Grant 1976
 Orthida - Enteletidae
Enteletes stehlii3, Enteletes bowsheri3
Enteletes stehlii3 Cooper and Grant 1976
Enteletes bowsheri3 Cooper and Grant 1976
 Orthida - Rhipidomellidae
Rhipidomella sp.3
1Ehiro et al. 2014; 2Ehiro and Ozawa 2020; 3Tazawa and Ibaraki 2023