Where: Okinawa, Japan (26.2° N, 127.7° E: paleocoordinates 26.5° N, 127.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Yonabaru Formation (Shimajiri Group), Pliocene (5.3 - 2.6 Ma)

• Yonabaru Mudstone (now a formation) spans calcareous nannofossil zones CN10b to middle of CN12b and planktonic foram zones PL1 to PL4 (Ujiié, 1994), indicating an age of primarily Pliocene (but ranging from latest Messinian to possibly early Gelasian).

• group-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, gray, blue, silty, sandy claystone and concretionary sandstone

Size class: macrofossils

Primary reference: F. S. MacNeil. 1960. Tertiary and Quaternary Gastropoda of Okinawa: A comparison of the late Miocene, Pliocene, and Pleistocene Gastropoda of Okinawa with related faunas of East Asia together with a resume of the geological setting of the fossiliferous deposits. United States Geological Survey Professional Paper 339:1-148 [A. Miller/C. Ferguson/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26804: authorized by Arnold Miller, entered by Chad Ferguson on 01.11.2002

Creative Commons license: CC BY (attribution)