Where: Okinawa, Japan (26.7° N, 128.0° E: paleocoordinates 26.9° N, 127.7° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Machinato Limestone Member, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Some widely seperated, but supposedly synchronouys detrital limestones that thinly veneer older formations and fill former areas of relief are grouped together under the name Machinato Limestone. For the most part veneers consist of indurated foraminiferal sand. The Machinato Limestone reaches a maximum thickness of 100 ft, and comprises a basal conglomerate, indurated clay, and sand derived from the Shimajiri Formation. The matrix is foraminiferal sand containing fragmented molluscan shells.

• formation-level stratigraphic resolution

Environment/lithology: lithified, sandy, conglomeratic limestone

Size class: macrofossils

Preservation: original aragonite

Collection methods: quarrying,

• Collections held in USNM and UGSG repositories.

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 42382: authorized by Austin Hendy, entered by Austin Hendy on 28.07.2004

Creative Commons license: CC BY (attribution)