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

Show authors, comments, and common names
Strophomenata
 Productida - Aulostegidae
Urushtenoidea crenulata3
 Productida - Productidae
"Dictyoclostus sinoindicus" = Costiferina sinoindica, "Dictyoclostus aff. spiralis" = Costiferina spiralis
"Dictyoclostus sinoindicus" = Costiferina sinoindica Frech 1911
"Dictyoclostus aff. spiralis" = Costiferina spiralis Waagen 1884
 Productida - Echinoconchidae
Waagenoconcha humboldti2
Waagenoconcha humboldti2 d'Orbigny 1842
 Orthotetida - Meekellidae
Meekella sp.1, Meekella garnieri1, Meekella cf. striatocostata1, Meekella minatoi n. sp.1, Meekella nodosa1, Orthothetina "sp. A"1, Orthothetina transversa n. sp.1, Orthothetina elongata n. sp.1, "Schuchertella frechi" = Orthothetina frechi1, Orthothetina kayseri1, Orthothetina polita1, Orthothetina hayasakai n. sp.1
Meekella garnieri1 Bayan 1874
Meekella minatoi n. sp.1 Nakamura 1972
Meekella nodosa1 Nakamura 1972
Orthothetina "sp. A"1 Schellwien 1900
Orthothetina transversa n. sp.1 Nakamura 1972
Orthothetina elongata n. sp.1 Nakamura 1972
"Schuchertella frechi" = Orthothetina frechi1 Huang 1933
Orthothetina kayseri1 Jaekel 1929
Orthothetina polita1 Fliegel 1901
Orthothetina hayasakai n. sp.1 Nakamura 1972
 Orthotetida - Derbyiidae
Derbyia "sp. A"1, Derbyia cf. acutiplicata1, Derbyia nipponica n. sp.1
Derbyia "sp. A"1 Waagen 1884
Derbyia nipponica n. sp.1 Nakamura 1972
 Orthotetida - Schuchertellidae
Schuchertella cf. beyrichi1, Schuchertella semiplana4, Streptorhynchus pelargonatus1
Streptorhynchus pelargonatus1 von Schlotheim 1816
1Nakamura 1972; 2Tazawa 1974; 3Tazawa 2001; 4Tazawa and Nakamura 2015