Where: Japan (33.2° N, 129.7° E)
• Paleocoordinates: 32.7° N, 127.1° E (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Masaru Member (Fukui Formation), Early/Lower Miocene (23.0 - 16.0 Ma)
• STRATIGRAPHIC RELATIONS: From "Masaru fossil bed" of the upper Fukui Fm, Sasebo Group, which conformably overlies the Late Oligocene Nishisonogi Fm, and unconformably underlying the Tsukumojima Fm. THICKNESS: From bed within formation of group that attains a thickness of 1300 m. AGE: Early Miocene, based on molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.
• bed-level stratigraphic resolution
Environment/lithology: estuary or bay; lithified, fine-grained, medium sandstone
Size class: macrofossils
Collection methods: surface (float),
• COLLECTOR: A. Mizuno (c. 1964). REPOSITORY: Not stated in text, unknown.
Primary reference: A. Mizuno. 1964. Paleogene and Early Neogene molluscan faunae in West Japan. Geological Survey of Japan Report 204 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 70878: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2007
Creative Commons license: CC0 (CC0)
Taxonomic list
Bivalvia | |
Crassostrea gravitesta oyster | |
Septifer sp. Récluz 1848 mussel | |
Tapes nagahamai venus clam
Cyclina japonica venus clam | |
Gastropoda | |
Batillaria takeharai snail | |
Cerithium sp. Bruguière 1789 cerith snail | |
Calyptraea sp. Lamarck 1799 slipper shell |