Where: Japan (39.8° N, 140.4° E: paleocoordinates 40.3° N, 139.8° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: NN16 nannofossil zone, Tentokuji Formation, Piacenzian (3.6 - 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. Refined to Piacenzian on the basis of nannofossil biostratigraphy [A. Hendy, 6/2020]. 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 97077: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Bivalvia | |
"Portlandia (Portlandella) japonica" = Megayoldia (Portlandella)
"Portlandia (Portlandella) japonica" = Megayoldia (Portlandella) clam | |
Malletia inermis clam | |
Yoldia sp. Möller 1842 clam | |
Ennucula cf. nipponica, Acila sp., Acila (Acila) divaricata, Acila (Truncacila) insignis, Acila (Truncacila) aff. castrensis
Ennucula cf. nipponica nut clam
Acila sp. Adams and Adams 1858 divaricate nutclam
Acila (Acila) divaricata Hinds 1843 divaricate nutclam
Acila (Truncacila) insignis divaricate nutclam
Acila (Truncacila) aff. castrensis Hinds 1843 divaricate nutclam | |
Musculus laevigatus mussel | |
Chlamys (Chlamys) tamurae, Chlamys (Chlamys) cosibensis, "Swiftopecten sp." = Chlamys (Swiftopecten), Yabepecten tokunagai, Mizuhopecten sp., Mizuhopecten yokoyamae
Chlamys (Chlamys) tamurae Masuda and Sawada 1961 scallop
Chlamys (Chlamys) cosibensis Yokoyama 1911 scallop
"Swiftopecten sp." = Chlamys (Swiftopecten) Hertlein 1935 scallop
Yabepecten tokunagai scallop
Mizuhopecten sp. Masuda 1963 scallop
Mizuhopecten yokoyamae scallop | |
Limopsis tajimae clam | |
Porterius dalli clam | |
"Arca boucardi" = Tetrarca boucardi
"Arca boucardi" = Tetrarca boucardi Jousseaume 1894 clam | |
Barbatia sp. Gray 1842 clam | |
"Tridonta (Tridonta) borealis" = Astarte borealis
"Tridonta (Tridonta) borealis" = Astarte borealis Chemnitz 1784 clam | |
Clinocardium (Cilatocardium) ciliatum Fabricius 1780 cockle
Nemocardium samarangae cockle | |
"Cadella lubrica" = Tellina (Cadella) tellin clam
Macoma (Macoma) nipponica tellin clam
Macoma (Macoma) calcarea Gmelin 1792 tellin clam | |
"Spisula (Mactromeris) grayana" = Mactromeris, "Spisula (Mactromeris) voyi" = Mactromeris polynyma
"Spisula (Mactromeris) grayana" = Mactromeris clam
"Spisula (Mactromeris) voyi" = Mactromeris polynyma Stimpson 1860 clam | |
"Phacosoma tomikawensis" = Dosinia (Phacosoma), Mercenaria cf. stimpsoni, Mercenaria chitaniana, Pseudamiantis cf. tauyensis
"Phacosoma tomikawensis" = Dosinia (Phacosoma) venus clam
Mercenaria cf. stimpsoni quahog
Mercenaria chitaniana quahog
Pseudamiantis cf. tauyensis venus clam | |
Cycladicama cumingii, "Felaniella usta" = Diplodonta
Cycladicama cumingii clam
"Felaniella usta" = Diplodonta clam | |
Gastropoda | |
Littorina sp. Ferussac 1821 periwinkle | |
Fulgoraria prevostiana volute | |
"Oliva mustelina" = Oliva (Neocylindrus) mustelina
"Oliva mustelina" = Oliva (Neocylindrus) mustelina Lamarck 1810 olive snail | |
Conidae indet. Fleming 1822 cone shell | |
Buccinidae indet. Rafinesque 1815 true whelk
Colubraria sp. Schumacher 1817 true whelk
Neptunea (Neptunea) eos true whelk
Buccinum sp. Linnaeus 1758 true whelk | |
Lirabuccinum sp. Vermej 1991 snail | |
Fusitriton izumozakiensis triton shell | |
Erronea sp. Troschel 1863 cowry | |
Cryptonatica janthostomoides moon snail
Glossaulax cf. vesicalis Philippi 1848 moon snail | |
Turritella (Neohaustator) saushuensis turret shell | |
Umbonium sp. Link 1807 top snail | |
Minolia sp. Adams 1860 snail | |
Turcica sp. Adams 1854 snail | |
Puncturella (Puncturella) nobilis puncturella | |
Lepeta cf. lima limpet | |