Where: Yamaguchi, Japan (34.0° N, 130.9° E: paleocoordinates 39.2° N, 127.4° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Ashiya Group, Late/Upper Oligocene (28.4 - 23.0 Ma)
• No stratigraphic data available as manuscript is in Japanese.
• bed-level stratigraphic resolution
Environment/lithology: coastal; sandstone
Size class: macrofossils
Collection methods: bulk, quarrying,
• No collection data available as manuscript is in Japanese. Material is reposited in the Dept of Earth and Planetary Sciences, Faculty of Science, Kyushu University, and in Shimonoseki City Archaeological Museum, Shimonoseki.
Primary reference: K. Okamoto and T. Sakai. 1995. Sedimentary facies and fossil molluscs of the Oligocene Ashiya Group in the Hikoshima Takenokojim and Nishiyama area, Shimonoseki City, Southwest Japan. Bulletin of the Mizunami Fossil Museum 22:19-50 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 51446: authorized by Austin Hendy, entered by Austin Hendy on 05.06.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Acila aff. ashiyaensis divaricate nutclam | |
? Venericardia sp. Lamarck 1801 clam | |
"Eucrassatella yabei" = Crassatellites yabei
"Eucrassatella yabei" = Crassatellites yabei Nagao 1928 clam | |
Solen connectens clam | |
Spisula sorachiensis Otatsume 1933 clam | |
Felaniella confusa Nagao 1928 clam | |
Macrocallista hanzawai, Macrocallista cf. matsuraensis, Pitar ashiyaensis, "Dosinia (Phacosoma) chikuzenensis" = Dosinia nomurai, "Pitar matsumotoi" = Pitaria matsumotoi
Macrocallista hanzawai Nagao 1928 venus clam
Macrocallista cf. matsuraensis Nagao 1928 venus clam
Pitar ashiyaensis venus clam
"Dosinia (Phacosoma) chikuzenensis" = Dosinia nomurai Otuka 1934 venus clam
"Pitar matsumotoi" = Pitaria matsumotoi Nagao 1928 venus clam | |
"Lucinoma acutilineatum" = Lucinoma acutilineata
"Lucinoma acutilineatum" = Lucinoma acutilineata Conrad 1849 clam | |
Glycymeris (Veletuceta) cisshuensis Makiyama 1926 clam | |
Gastropoda | |
Siphonalia shojii Hirayama 1956 true whelk
"Nassarius" sp. Duméril 1806 true whelk | |
"Euspira ashiyaensis" = Euspira meisensis, Polinices sp.
"Euspira ashiyaensis" = Euspira meisensis Makiyama 1926 moon snail
Polinices sp. Monfort 1810 moon snail |