Also known as Chichibu Cement Co. Mine
Where: Saitama, Japan (36.0° N, 139.1° E: paleocoordinates 43.7° N, 122.5° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Buko Limestone Formation, Ladinian to Ladinian (242.0 - 228.0 Ma)
• "basal part" of the formation (Tamura et al. 1978)
• formation-level stratigraphic resolution
Environment/lithology: limestone
Size class: macrofossils
Primary reference: M. Tamura, S. Kawada, A. Takeda, H. Oguri, T. Saito, K. Tsuchida, and M. Inoue. 1978. A Find of Triassic Molluscs from the Buko Limestone Formation, Chichibu, Saitama Prefecture . Proceedings of the Japan Academy (Series B: Physical and Biological Sciences) 54(2):41-44 [A. Dunhill/B. Allen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 201826: authorized by Alex Dunhill, entered by Bethany Allen on 31.05.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Plicatula (Pseudoplacunopsis) fissistriata" = Placunopsis fissistriata
"Plicatula (Pseudoplacunopsis) fissistriata" = Placunopsis fissistriata Winckler 1861 scallop | |
Entolium subdemissum Muenster 1841 scallop | |
Gervillia (Cultriopsis) angulata Münster 1841 oyster
Bakevellia cf. bouei Hauer 1857 oyster | |
Pleuromya cf. elongata Schlotheim 1822 clam | |
? Unionites sp. Wissman 1841 clam
Unionites cf. muensteri Wissmann 1841 clam | |
Myophoricardium aff. lineatum von Wöhrmann 1889 clam | |
Gruenewaldia woehrmanni Bittner 1895 clam
Costatoria sp. Waagen 1907 clam | |
Crinoidea | |
Pentacrinus sp. Miller 1821 Sea lily |