Also known as RS 369/22-323-9
Where: Japan (26.1° N, 127.7° E: paleocoordinates 26.8° N, 126.7° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Yonabaru Clay Member (Shimajiri Formation), Late/Upper Miocene (11.6 - 5.3 Ma)
• The Yonabaru Clay includes all Shimajiri Formation exposed below the upper tuffaceous pumiceous zone. The Yonabaru consists of bluish to gray silty to sandy clay, commonly with hackly to conchoidal fracture and fine dark-colored laminated to massive sand, weathering brown to gray, and in places contains large lime indurated concretions of sand. Most macrofossils are found in sandy beds intercalated with the clays. The Yonabaru passes under the cover of the basal gravels of the Naha limestone, and lap onto or are faukted against Paleozoic basement rocks.
• bed-level stratigraphic resolution
Environment/lithology: deep-water; poorly lithified, silty, sandy claystone and concretionary, brown, gray sandstone
Size class: macrofossils
Preservation: original aragonite
Reposited in the USNM
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 42170: authorized by Austin Hendy, entered by Austin Hendy on 25.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Cocculina loochooensis snail | |
Amaea (Discoscala) aff. niasensis, Epitonium (Crisposcala) okinavensis, "Turriscala (Claviscala) shimajiriensis" = Claviscala
Amaea (Discoscala) aff. niasensis wentletrap
Epitonium (Crisposcala) okinavensis wentletrap
"Turriscala (Claviscala) shimajiriensis" = Claviscala wentletrap | |
Turritella filiola turret shell | |
Crassispira hataii snail
Compsodrillia nakamurai snail | |
Euspira cf. pallida Broderip and Sowerby 1829 moon snail
Polinices cf. albumen Linnaeus 1758 moon snail
Naticarius aff. concinnus Dunker 1859 moon snail | |
Semicassis sp. Mörch 1852 snail | |
Dolichupis (Trivellona) shimajiriensis MacNeil 1960 snail | |
"Ficus intermedia" = Priscoficus intermedia
"Ficus intermedia" = Priscoficus intermedia Melleville 1843 fig shell | |
"Afer aff. oostinghi" = Tudivasum (Afer)
"Afer aff. oostinghi" = Tudivasum (Afer) snail | |
Fusisyrinx sp. Bartsch 1934 ribbed mitre | |
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira)
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira) snail | |
"Oliva aff. australis" = Oliva (Strephona) australis, Ancilla iwaensis
"Oliva aff. australis" = Oliva (Strephona) australis Duclos 1835 olive snail
Ancilla iwaensis olive snail | |
Pseudolatirus yonabaruensis MacNeil 1960 snail | |
Hindsia (Nihonophos) magnifica Lischke 1871 true whelk
Phos (Coraeophos) aff. reticosus true whelk | |
"Murex cf. bonneti" = Murex (Haustellum) bonneti, Ceratostoma brachypteron, Coralliophila (Hirtomurex) iwaensis, "Coralliophila (? Fusomurex) sp." = Hirtomurex
"Murex cf. bonneti" = Murex (Haustellum) bonneti Cossman 1903 murex snail
Ceratostoma brachypteron murex snail
Coralliophila (Hirtomurex) iwaensis murex snail
"Coralliophila (? Fusomurex) sp." = Hirtomurex Coen 1922 murex snail | |
Turricula aff. tornata Dillwyn 1817 snail | |
Conus sielboldianus, Conus shimajiriensis, Conus cf. yabei, "Conus aff. djarianensis" = Conus (Lithoconus) djarianensis
Conus sielboldianus cone shell
Conus shimajiriensis cone shell
Conus cf. yabei cone shell
"Conus aff. djarianensis" = Conus (Lithoconus) djarianensis Martin 1895 cone shell | |
Buccinaria okinawa snail | |
Unedogemmula ina turrid
Gemmula cf. granosa turrid | |
Splendrillia nomurai snail | |
Hipponix (Malluvium) cf. lissus hoof shell | |
Bolma sp. n. sp.
Bolma sp. n. sp. Risso 1826 snail |