South of Hatsukari (Miocene of Japan)

Where: Japan (35.8° N, 138.9° E: paleocoordinates 36.8° N, 137.7° E)

• outcrop-level geographic resolution

When: Blow zone N 17 zone, Saruhashi dacitic tuff Member (Otsuki Formation), Messinian (7.2 - 5.3 Ma)

• Shown as upper part of N17 zone, and referred to as "uppermost Miocene" - suggesting an early Messinian age.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; pebbly sandstone

• environment is "shallow water"
• tuffaceous pebbly sandstone

Size class: macrofossils

Primary reference: T. Ozawa and S. Tomida. 1996. Occurrence of Aturia coxi (Cephalopoda: Nautilida) from the uppermost Miocene of Japan and its implication for Late Miocene marine climate in the northwestern Pacific. Journal of Paleontology 70(5):795-798 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4871: authorized by John Alroy, entered by John Alroy on 28.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• not clear if list is complete even for molluscs
unclassified
  -
Cephalopoda
 Nautilida - Aturiidae
Aturia coxi Miller 1947 nautiloid
Gastropoda
 Trochoidea - Turbinidae
Turbo (Lunatica) marmoratus Linnaeus 1758 snail
T. (Lunatica)
 Trochoidea - Trochidae
Ethalia maxima top snail
Bivalvia
 Arcida - Glycymerididae
Glycymeris cf. cisshuensis Makiyama 1926 clam
 Pectinida - Limidae
Lima sp. Bruguière 1797 file clam
 Pectinida - Pectinoidae
Chlamys sp. Röding 1798 scallop
Amussiopecten akiyamae Masuda 1962 scallop
 Cardiida - Veneridae
Pitar (Pitarina) sp. Jukes-Browne 1913 venus clam
P. (Pitarina)
Paphia exilis Shuto 1957 venus clam
"Phacosoma sp." = Dosinia (Phacosoma) Jukes-Brown 1912 venus clam
 Solenida - Solenidae
Solen sp. Linnaeus 1758 clam