Imo, Yahagi, Rikuzentakata City, Iwate Prefecture, Nakamura loc (Permian of Japan)

Where: Japan (39.0° N, 141.5° E: paleocoordinates 21.9° N, 112.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Lower Kanokura

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Collected by K. Nakamura

Primary reference: K. Nakamura. 1960. Dictyoclostus derived from the Middle Permian Kanokura Series and the Lower Permian Sakamotozawa Series of the Kitakami Mountains, Japan. Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and Mineralogy 10:495-511 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 114089: authorized by Matthew Clapham, entered by Matthew Clapham on 09.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Meekellidae
Orthothetina "sp. A"1 Schellwien 1900
"Schuchertella frechi" = Orthothetina frechi1 Huang 1933
Orthothetina polita1 Fliegel 1901
Orthothetina kayseri1 Jaekel 1929
Orthothetina hayasakai n. sp.1 Nakamura 1972
Orthothetina elongata n. sp.1 Nakamura 1972
Orthothetina transversa n. sp.1 Nakamura 1972
Meekella garnieri1 Bayan 1874
Meekella nodosa1 Nakamura 1972
Meekella minatoi n. sp.1 Nakamura 1972
 Orthotetida - Schuchertellidae
Streptorhynchus pelargonatus1 von Schlotheim 1816
 Orthotetida - Derbyiidae
Derbyia "sp. A"1 Waagen 1884
Derbyia nipponica n. sp.1 Nakamura 1972
 Productida - Echinoconchidae
Waagenoconcha humboldti2 d'Orbigny 1842
 Productida - Productidae
"Dictyoclostus aff. spiralis" = Costiferina spiralis, "Dictyoclostus sinoindicus" = Costiferina sinoindica
"Dictyoclostus aff. spiralis" = Costiferina spiralis Waagen 1884
"Dictyoclostus sinoindicus" = Costiferina sinoindica Frech 1911
 Productida - Aulostegidae