Where: Japan (39.8° N, 140.4° E: paleocoordinates 40.5° N, 139.6° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: NN16 nannofossil zone, Tentokuji Formation, Pliocene (5.3 - 2.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Akita Fm, which overlie the Funakawa Fm, and is overlain by the Sasaoka Fm. AGE: Middle Pliocene, on the basis of foraminiferal and calcareous nanofossil biostratigraphy. STRATIGRAPHIC POSITION: From the "upper" member of the formation, near the top of the section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified siltstone and poorly lithified, medium-grained sandstone
Size class: macrofossils
Collection methods: bulk,
• COLLECTORS: Not stated in text, but presumably including K. Amano et al. REPOSITORY: Not stated in text. Possibly Joetsu University or Akita University.
Primary reference: K. Amano, M. Suzuki, and T. Sato. 2000. Warm-water influx into Japan Sea in the middle Pliocene - Molluscan faunas from the Tentokuji FOrmation around Mt. Taihei in Akita Prefecture. Journal of the Geological Society of Japan 106(4):299-306 [A. Hendy/A. Hendy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 97080: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Yoldia (Cnesterium) cf. notabilis Yokoyama 1922 clam | |
Acila (Truncacila) nakazimai divaricate nutclam |