Where: Russian Federation (47.4° N, 142.5° E: paleocoordinates 47.8° N, 141.3° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Maruyamskaya Formation, Late/Upper Miocene (11.6 - 5.3 Ma)
• STRATIGRAPHIC RELATIONS: From the lower Maruyamskaya suite of the "upper Okobykay" horizon, which lies below the "Maruyama" (Late Miocene) and above the "Kurasi" (Middle Miocene) horizons. THICKNESS: Total thickness of unit is 1200 m. AGE: Late Miocene, on the basis of classification into the "upper Okobykay" horizon. STRATIGRAPHIC POSITION: Composite checklist for upper part of the "formation" in this area.
• formation-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; poorly lithified, conglomeratic siltstone
Size class: macrofossils
Collection methods: COLLECTOR: Unknown, presumably Uwatoko (c. 1937). REPOSITORY: Unknown repository.
Primary reference: A. I. Kafanov and K. Ogasawara. 2003. Neogene and Paleogene Molluscan (Bivalvia) Cenozones of Sakhalin and Kurile Islands. Science Reports, Institute of Geoscience, University of Tsukuba 24:45-79 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 70477: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Acila (Truncacila) marujamensis divaricate nutclam
Acila (Truncacila) plana divaricate nutclam | |
"Yoldia (Cnesterium) kuluntunensis" = Yoldia (Cnesterium) aeolica
"Yoldia (Cnesterium) kuluntunensis" = Yoldia (Cnesterium) aeolica Valenciennes 1846 clam | |
Mizuhopecten subyessoensis scallop | |
Conchocele inflata clam | |
Ciliatocardium uyemurai cockle | |
Macoma optiva tellin clam | |
"Spisula (Pseudocardium) sachalinensis" = Pseudocardium
"Spisula (Pseudocardium) sachalinensis" = Pseudocardium clam | |
"Cyclocardia crebricostata" = Crassicardia crebricostata
"Cyclocardia crebricostata" = Crassicardia crebricostata Krause 1885 clam |