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 | |
Crassispira hataii snail
Compsodrillia nakamurai snail | |
Dolichupis (Trivellona) shimajiriensis MacNeil 1960 snail | |
Semicassis sp. Mörch 1852 snail | |
"Ficus intermedia" = Priscoficus intermedia
"Ficus intermedia" = Priscoficus intermedia Melleville 1843 fig shell | |
Fusisyrinx sp. Bartsch 1934 ribbed mitre | |
"Afer aff. oostinghi" = Tudivasum (Afer)
"Afer aff. oostinghi" = Tudivasum (Afer) snail | |
"Oliva aff. australis" = Oliva (Strephona) australis, Ancilla iwaensis
"Oliva aff. australis" = Oliva (Strephona) australis Duclos 1835 olive snail
Ancilla iwaensis olive snail | |
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira)
"Ancilla (Baryspira) cf. albocallosa" = Amalda (Baryspira) snail | |
Turricula aff. tornata Dillwyn 1817 snail | |
Buccinaria okinawa 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 | |
Gemmula cf. granosa turrid
Unedogemmula ina turrid | |
Splendrillia nomurai snail | |
Phos (Coraeophos) aff. reticosus true whelk
Hindsia (Nihonophos) magnifica Lischke 1871 true whelk | |
Pseudolatirus yonabaruensis MacNeil 1960 snail | |
Ceratostoma brachypteron, Coralliophila (Hirtomurex) iwaensis, "Coralliophila (? Fusomurex) sp." = Hirtomurex, "Murex cf. bonneti" = Murex (Haustellum) bonneti
Ceratostoma brachypteron murex snail
Coralliophila (Hirtomurex) iwaensis murex snail
"Coralliophila (? Fusomurex) sp." = Hirtomurex Coen 1922 murex snail
"Murex cf. bonneti" = Murex (Haustellum) bonneti Cossman 1903 murex snail | |
Polinices cf. albumen Linnaeus 1758 moon snail
Euspira cf. pallida Broderip and Sowerby 1829 moon snail
Naticarius aff. concinnus Dunker 1859 moon snail | |
Hipponix (Malluvium) cf. lissus hoof shell | |
"Turriscala (Claviscala) shimajiriensis" = Claviscala, Epitonium (Crisposcala) okinavensis, Amaea (Discoscala) aff. niasensis
"Turriscala (Claviscala) shimajiriensis" = Claviscala wentletrap
Epitonium (Crisposcala) okinavensis wentletrap
Amaea (Discoscala) aff. niasensis wentletrap | |
Turritella filiola turret shell | |
Bolma sp. n. sp.
Bolma sp. n. sp. Risso 1826 snail | |
Cocculina loochooensis snail |