Hanawa, Yamamoto-gun (Pleistocene of Japan)

Where: Japan (40.3° N, 140.1° E: paleocoordinates 40.3° N, 140.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wakimoto Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• Fossils come from the upper part of the beds underlying the Sandy shale beds. The stratigraphy includes the "Gray shale beds" overlain by the "Alternation of sandstone and shale beds" and then the "Sandy shale beds." The "Alternation of sandstone and shale beds" likely corresponds to the Wakimoto beds as proposed by S. Toyama. Wakimoto Formation is Middle Pleistocene age (Ozawa & Kamiya, 2005).

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, coarse-grained sandstone

• Water depths of "50-80 fathoms"
• Gray to brownish colored compact, coarse grained sandstone or a fine grained conglomeratic sandstone bed

Size class: macrofossils

Collection methods: Repository: Institute of Geology and Paleontology, Tohoku University, Sendai (IGPS)

Primary reference: K. M. Hatai. 1940. The Cenozoic Brachiopoda of Japan. Science Reports, Tohoku Imperial University, Series 2 20:1-413 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190675: authorized by Matthew Clapham, entered by Matthew Clapham on 13.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Dallinidae
 Terebratulida - Terebrataliidae
Terebratalia asanoi Nomura and Hatai 1936
Terebratalia coreanica Adams and Reeve 1850
Terebratalia bialata Nomura and Hatai 1936
 Terebratulida - Laqueidae
Laqueus hanawensis Hayasaka 1929
Laqueus rubellus Sowerby 1846
Laqueus japonicus Yabe and Hatai 1934
 Terebratulida - Cancellothyrididae
Terebratulina yabei Nomura and Hatai 1936
Terebratulina crossei Davidson 1882
 Rhynchonellida - Hemithirididae
Bivalvia
 Arcida - Arcidae
"Arca boucardi" = Arca (Arca) boucardi
"Arca boucardi" = Arca (Arca) boucardi Jousseaume 1894 ark
 Arcida - Limopsidae
 Carditida - Astartidae
 Carditida - Carditidae
Venericardia ferruginea Clessin 1888 clam
 Cardiida - Cardiidae
Gastropoda
 Sorbeoconcha - Turritellidae