Where: Japan (32.4° N, 130.1° E: paleocoordinates 39.7° N, 124.1° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Middle Eocene (48.6 - 37.2 Ma)
• Stratigraphic information not given, although Yokoyama thought the unit was correlative with strata in the Miike coalfield. Both Lutetian and Bartonian strata are exposed on the Amakusa Islands.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified sandstone
Size class: macrofossils
Collected in 1897-1904
Primary reference: T. Nagao. 1928. Palaeogene fossils of the Island of Kyushu, Japan Part I. Science Reports of the Tohoku Imperial University 9(3):97-128 [M. Uhen/B. Shipps/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 179913: authorized by Matthew Clapham, entered by Matthew Clapham on 03.07.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Lima amaxensis n. sp.
Lima amaxensis n. sp. Yokoyama 1911 file clam | |
"Venericardia nipponica" = Venericardia (Venericor) nipponica
"Venericardia nipponica" = Venericardia (Venericor) nipponica Yokoyama 1911 clam | |
Crassatella fusca Yokoyama 1911 clam |