USGS 17449 - Okinawa: Late/Upper Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Trochidae
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Monilea (Rossiteria) cf. nuclea
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Gastropoda
- Solariellidae
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"Solariella" shimajiriensis
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica perspectiva
(Linnaeus 1767)
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Gastropoda
- Heterostropha
- Pyramidellidae
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Syrnola aff. titizimana
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Gastropoda
- Turritellidae
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Turritella filiola
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Gastropoda
- Naticidae
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Euspira cf. pallida
(Broderip and Sowerby 1829)
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Polinices cumingianus
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| Subspecies: Polinice cf. cumingianus madioensis | ||||||||||
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Gastropoda
- Triviidae
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Dolichupis (Trivellona) shimajiriensis
MacNeil 1960
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Gastropoda
- Cypraeidae
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Cribraria (Talostolida) aff. cincta
(Martin 1899)
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| recombined as Erronea (Cribraria) cincta | ||||||||||
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Gastropoda
- Neogastropoda
- Costellariidae
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Uromitra cophina
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| Subspecies: Uromitra cophina gonzabuensis | ||||||||||
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Gastropoda
- Neogastropoda
- Turbinellidae
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Afer aff. oostinghi
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| spelled with current rank as Tudivasum (Afer) | ||||||||||
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? Vasum sp.
Röding 1798
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Gastropoda
- Neogastropoda
- Mitridae
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Mitra (Cancilla) cf. granatinaeformis
Martin 1884
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Gastropoda
- Neogastropoda
- Columbellidae
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Mitrella gonzabuensis
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Gastropoda
- Neogastropoda
- Buccinidae
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Siphonalia yonabaruensis
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius (? Niotha) acteon
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Gastropoda
- Neogastropoda
- Olividae
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Olivella aff. fulgurata
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Oliva mustellina
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| Subspecies: Oliva mustellina paucicallosa | ||||||||||
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Gastropoda
- Neogastropoda
- Turridae
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Lophiotoma cf. leucotropis
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Micantapex striatotuberculata
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Gastropoda
- Neogastropoda
- Conidae
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Conus cf. cosmetulus
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Conus cf. litteratus
Linnaeus 1758
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| recombined as Conus (Lithoconus) litteratus | ||||||||||
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Gastropoda
- Neogastropoda
- Drilliidae
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Crassopleura aff. brevis
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Gastropoda
- Tonnidae
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Tonna luetostoma
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Okinawa |
| Coordinates: | 26.2° North, 127.7° East (view map) | ||
| Paleocoordinates: | 26.8° North, 126.7° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Late/Upper Miocene | ||
| Age range of interval: | 11.63000 - 5.33300 m.y. ago |
Stratigraphy
| Formation: | Shimajiri | Member: | Yonabaru Clay | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | poorly lithified silty,sandy claystone |
| Secondary lithology: | planar lamination,concretionary,brown,gray sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: 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. | |
| Environment: | deep-water indet. |
| Geology comments: Molluscs found in assemblages of the Yonabaru Clay indicate moderately shallow to moderately deep water. Probably a depth of less than 100 fathoms in shallow facies and probably not more than 300 fathoms in deeper facies. | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collection method comments: Collections held in USNM and UGSG repositories. | |
| Taxonomic list comments:Exhaustive for gastropoda. | |
Metadata
| Also known as: | RS 270 | ||
| Database number: | 42173 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-07-25 20:00:15 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | group members | Released: | 2005-07-25 20:00:15 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 7337. | 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] |