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: paleoecologic analysis
PaleoDB collection 97078: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Bivalvia | |
"Felaniella usta" = Diplodonta
"Felaniella usta" = Diplodonta clam | |
"Phacosoma tomikawensis" = Dosinia (Phacosoma)
"Phacosoma tomikawensis" = Dosinia (Phacosoma) venus clam | |
Clinocardium (Cilatocardium) cf. ciliatum Fabricius 1780 cockle
Nemocardium samarangae cockle | |
Macoma sp. Leach 1819 tellin clam
Macoma (Macoma) nipponica tellin clam | |
Astarte hakodatensis clam | |
Mizuhopecten yessoensis Jay 1857 scallop | |
Porterius dalli clam | |
"Striarca (Arcopsis) symmetrica" = Arcopsis symmetrica
"Striarca (Arcopsis) symmetrica" = Arcopsis symmetrica Reeve 1844 clam | |
Limopsis tajimae clam | |
Ennucula sp. Iredale 1931 nut clam | |
"Portlandia (Portlandella) toyamaensis" = Megayoldia (Portlandella)
"Portlandia (Portlandella) toyamaensis" = Megayoldia (Portlandella) clam | |
Malletia inermis clam | |
Yoldia sp. Möller 1842 clam | |
Gastropoda | |
Ophiodermella sp. Bartsch 1944 turrid | |
Conidae indet. Fleming 1822 cone shell
Propebela (Turritoma) yokoyamai cone shell | |
Neptunea (Neptunea) cf. eos true whelk |