Where: Okinawa, Japan (26.7° N, 127.9° E: paleocoordinates 26.8° N, 127.8° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Naha Formation (Ryukyu Group), Calabrian to Calabrian (1.8 - 0.1 Ma)
• Coarse conglomerate bed 1 foot thick located about 15 feet below top of quarry. Naha Formation ranges from the middle Calabrian (c. 1.3 Ma) to the Middle Pleistocene (c. 0.4 Ma), according to Yamamoto et al. (2006).
• bed-level stratigraphic resolution
Environment/lithology: lagoonal or restricted shallow subtidal; poorly lithified, brown, white, calcareous grainstone and poorly lithified, brown, white limestone
Size class: macrofossils
Collected by Delos E. Flint; reposited in the USNM
Primary reference: G. A. Cooper. 1957. Tertiary and Pleistocene Brachiopods of Okinawa, Ryukyu Islands. United States Geological Survey Professional Paper 314(A):1-20 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 190232: authorized by Matthew Clapham, entered by Matthew Clapham on 03.12.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Terebratulina sp. d'Orbigny 1847
Terebratulina subcarinata Cooper 1957 | |
Pictothyris picta Dillwyn 1817
Jolonica ryukyuensis Yabe and Hatai 1935 |