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 "lower" member of the formation, near the base of the section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified sandstone and poorly lithified siltstone
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: taxonomic analysis
PaleoDB collection 97076: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella (Neohaustator) saushuensis turret shell SUBSPECIES: Turritella (Neohaustator) saushuensis motidukii
| |
Neptunea (Neptunea) cf. constricta true whelk | |
Bivalvia | |
Porterius dalli clam | |
"Striarca (Arcopsis) symmetrica" = Arcopsis symmetrica
"Striarca (Arcopsis) symmetrica" = Arcopsis symmetrica Reeve 1844 clam | |
Chlamys (Chlamys) cosibensis Yokoyama 1911 scallop
Mizuhopecten sp. Masuda 1963 scallop | |
"Pandora wardiana" = Pandora (Pandorella) wardiana
"Pandora wardiana" = Pandora (Pandorella) wardiana Adams 1860 clam | |
Mercenaria chitaniana quahog | |
Cycladicama cumingii, "Felaniella usta" = Diplodonta
Cycladicama cumingii clam
"Felaniella usta" = Diplodonta clam | |
Clinocardium sp. Keen 1936 cockle | |
"Megangulus cf. zyonoensis" = Tellina (Megangulus)
"Megangulus cf. zyonoensis" = Tellina (Megangulus) tellin clam | |
"Tridonta sp." = Astarte (Tridonta)
"Tridonta sp." = Astarte (Tridonta) clam | |
Acila (Truncacila) insignis divaricate nutclam | |
"Nuculana (Nuculana) pernula" = Nuculana pernula
"Nuculana (Nuculana) pernula" = Nuculana pernula Müller 1779 pointed nut clam | |
Malletia inermis clam | |
"Portlandia (Portlandella) toyamaensis" = Megayoldia (Portlandella)
"Portlandia (Portlandella) toyamaensis" = Megayoldia (Portlandella) clam |