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)
• Fossiliferous bed at the base of low hill. Yonabaru Mudstone (now a formation) spans calcareous nannofossil zones CN10b to middle of CN12b and planktonic foram zones PL1 to PL4 (UjiiĆ©, 1994), indicating an age of primarily Pliocene (but ranging from latest Messinian to possibly early Gelasian).
• bed-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, gray, blue, silty, sandy claystone
Size classes: macrofossils, mesofossils
Collected by Raymond A. Saplis; 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 26654: authorized by Arnold Miller, entered by Chad Ferguson on 21.10.2002, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Jolonica macneili Cooper 1957 | |
Gastropoda | |
? Makiyamaia ? coreanica Adams and Reeve 1850 ribbed mitre | |
Hindsia (Nihonophos) whitmorei true whelk | |
Granulifusus niponicus Smith 1879 snail | |
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira)
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira) snail | |
Cancellaria yonabaruensis n. sp.
Cancellaria yonabaruensis n. sp. snail | |
Gemmula aff. asukana turrid | |
Nihonia shimajiriensis n. sp.
Nihonia shimajiriensis n. sp. MacNeil 1960 snail | |
Conus cf. yabei, "Conus cf. litteratus" = Conus (Lithoconus) litteratus
Conus cf. yabei cone shell
"Conus cf. litteratus" = Conus (Lithoconus) litteratus Linnaeus 1758 cone shell | |
Chicoreus sp. Monfort 1810 murex snail | |
Natica cf. vitellus Linnaeus 1758 moon snail | |
Bathybembix sp. Crosse 1892 snail | |
"Architectonica maxima" = Architectonica (Architectonica) maxima
"Architectonica maxima" = Architectonica (Architectonica) maxima Philippi 1849 sundial |