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 | |
Orthothetina "sp. A"1, "Schuchertella frechi" = Orthothetina frechi1, Orthothetina polita1, Orthothetina kayseri1, Orthothetina hayasakai n. sp.1, Orthothetina elongata n. sp.1, Orthothetina transversa n. sp.1, Meekella sp.1, Meekella garnieri1, Meekella nodosa1, Meekella cf. striatocostata1, Meekella minatoi n. sp.1
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 cf. striatocostata1 Cox 1857
Meekella minatoi n. sp.1 Nakamura 1972 | |
Schuchertella cf. beyrichi1 Rothpletz 1892
Schuchertella semiplana4 Waagen 1884
Streptorhynchus pelargonatus1 von Schlotheim 1816 | |
Derbyia "sp. A"1 Waagen 1884
Derbyia nipponica n. sp.1 Nakamura 1972
Derbyia cf. acutiplicata1 Metz 1936 | |
Waagenoconcha humboldti2 d'Orbigny 1842 | |
"Dictyoclostus aff. spiralis" = Costiferina spiralis, "Dictyoclostus sinoindicus" = Costiferina sinoindica
"Dictyoclostus aff. spiralis" = Costiferina spiralis Waagen 1884
"Dictyoclostus sinoindicus" = Costiferina sinoindica Frech 1911 | |
Urushtenoidea crenulata3 Ting 1962 |