Kadosawa Limestone quarries, Nabeyama, Tochigi Prefecture (Hayasaka coll) (Permian of Japan)

Where: Japan (36.5° N, 139.6° E: paleocoordinates 19.9° N, 110.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nabeyama Formation, Roadian (272.3 - 268.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, black, argillaceous, carbonaceous limestone

Size class: macrofossils

Collected by Ichiro Hayasaka in 1926, 1932

• Small collection made in 1926, larger in summer of 1932

Primary reference: I. Hayasaka. 1932. An Upper Carboniferous brachiopod fauna of Japan. Journal of the Geological Society of Tokyo 39:547-551 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125086: authorized by Matthew Clapham, entered by Matthew Clapham on 03.03.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Orthotetida - Meekellidae
Orthothetina eusarkos, Orthothetina planoconvexa n. sp., Meekella gigantea n. sp.
Orthothetina eusarkos Abich 1878
n. ssp. lata
Orthothetina planoconvexa n. sp. Hayasaka 1933
Meekella gigantea n. sp. Hayasaka 1932
 Orthotetida - Schuchertellidae
Streptorhynchus sp.
 Strophomenida - Daviesiellidae
? Daviesiella ? comoides
? Daviesiella ? comoides Sowerby 1823
Unlikely ID
 Productida - Echinoconchidae
"Echinoconchus" ? defensus
"Echinoconchus" ? defensus Thomas 1914
Possibly Vediproductus
Rhynchonellata
 Spiriferida - Elythidae
Squamularia sp.
Squamularia sp. Gemmellaro 1899
 Spiriferida - Martiniidae
Martinia sp.
Martinia sp. M'Coy 1844
 Spiriferida - Spiriferidae
"Spirifer" acutiplicatus n. sp.
"Spirifer" acutiplicatus n. sp. Hayasaka 1933
 Orthida - Schizophoriidae
Orthotichia japonica n. sp.
Orthotichia japonica n. sp. Hayasaka 1932
includes ssp. striata
 Orthida - Enteletidae
Enteletes acutiplicatus n. sp.
Enteletes acutiplicatus n. sp. Hayasaka 1932