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, Uyamano 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
Cephalopoda
 Bactritida - Parabactritidae
Aktastioceras nishikawai n. sp. Niko et al. 1993
 Goniatitida - Agathiceratidae
Agathiceras sp. Gemmellaro 1887 ammonite
 Goniatitida - Somoholitidae
Somoholites miharanoroensis n. sp. Ehiro et al. 2014 ammonite
 Goniatitida - Marathonitidae
Marathonites cf. jpsmithi Böse 1919 ammonite
 Goniatitida - Adrianitidae
Emilites cf. prosperus Ruzhentsev 1978 ammonite
 Goniatitida - Neoicoceratidae
Eoasianites cf. subhanieli Ruzhentsev 1933 ammonite
 Goniatitida - Bisatoceratidae
Neoglaphyrites discoidalis n. sp. Ehiro et al. 2014 ammonite
 Prolecanitida - Pronoritidae
Metapronorites sp. Librovitch 1938 ammonite
Metapronorites cf. timorensis Haniel 1915 ammonite