Hachiman, Iki Island (Miocene of Japan)

Where: Nagasaki, Japan (33.8° N, 129.7° E: paleocoordinates 35.2° N, 127.3° E)

• coordinate based on political unit

• hand sample-level geographic resolution

When: Chojabaru Formation (Iki Group), Middle Miocene (16.0 - 11.6 Ma)

• "Tertiary" per Jordan; middle Miocene in Yabumoto and Sakamato 2010; 15.3 Ma pers. comm. from S. Kimura in Watanabe and Uyeno, 1999 cited by Yabumoto 2020. Not specified if from a single bed or group of beds

Environment/lithology: lacustrine; diatomite

• freshwater
• "grayish chalky rock" in Jordan 1919; diatomite in Yabumoto and Sakamoto

Size class: macrofossils

Reposited in the CAS

Primary reference: D. S. Jordan. 1919. Description of a new fossil fish from Japan. Proceedings of the California Academy of Sciences 9(9):271-272 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 201879: authorized by Patricia Holroyd, entered by Patricia Holroyd on 06.06.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Acanthomorphata - Sinipercidae
Coreoperca maruoi n. sp.2, Siniperca ikikoku n. sp.1
Coreoperca maruoi n. sp.2 Yabumoto and Uyeno 2009
Siniperca ikikoku n. sp.1 Yabumoto 2020
 Cypriniformes - Cyprinidae
Iquius nipponicus n. gen. n. sp.
Iquius nipponicus n. gen. n. sp. Jordan 1919 carp-like fish
1Yabumoto 2020; 2Yabumoto and Uyeno 2009