Kosiba, Kanasawa-mura (Pleistocene of Japan)

Where: Japan (35.3° N, 139.6° E: paleocoordinates 35.5° N, 139.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Koshima Formation, Calabrian (1.8 - 0.8 Ma)

• Lower-middle Koshiba Formation is constrained to 1.63-1.475 Ma (MIS 49-57) by nannofossil, planktonic foram, and oxygen isotope stratigraphy (Nozaki et al., 2014)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, tuffaceous sandstone

• Cross bedded tuffaceous and scoriaceous sand

Size class: macrofossils

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 190822: authorized by Matthew Clapham, entered by Matthew Clapham on 18.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Dallinidae
 Terebratulida -
Kurakithyris quantoensis n. gen. n. sp. Hatai 1946
Kurakithyris nipponensis Yokoyama 1910
 Terebratulida - Terebrataliidae
Diestothyris frontalis Middendorff 1849
? Coptothyris grayi Davidson 1852
 Terebratulida - Laqueidae
Laqueus blanfordi Dunker 1882
Laqueus rubellus Sowerby 1846
Laqueus quadratus Yabe and Hatai 1934
Laqueus kosibensis Hatai 1936
 Terebratulida - Terebratulidae
Gryphus angularis Hayasaka 1922
 Terebratulida - Cancellothyrididae
Terebratulina crossei Davidson 1882
Terebratulina kiiensis Dall and Pisbry 1891