USGS 17454 - Okinawa: Late Miocene - Early Pliocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Gastropoda - Epitoniidae
Gastropoda - Campanilidae
Gastropoda - Naticidae
Gastropoda - Neogastropoda - Volutidae
Phenacoptygma sp. n. sp. Dall 1918
Gastropoda - Neogastropoda - Marginellidae
Gastropoda - Neogastropoda - Ancillariidae
Gastropoda - Neogastropoda - Olividae
Gastropoda - Neogastropoda - Borsoniidae
Gastropoda - Neogastropoda - Pseudomelatomidae
Gastropoda - Neogastropoda - Turridae
Gastropoda - Neogastropoda - Raphitomidae
Gastropoda - Neogastropoda - Mangeliidae
Gastropoda - Neogastropoda - Clavatulidae
Gastropoda - Neogastropoda - Fasciolariidae
? Fusinus sp. Rafinesque 1815
Gastropoda - Neogastropoda - Cominellidae
Gastropoda - Neogastropoda - Nassariidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Liotiidae
Gastropoda - Heterostropha - Mathildidae
Gastropoda - Heterostropha - Acteonidae
Gastropoda - Heterostropha - Architectonicidae
see common names

Geography
Country:Japan State/province:Okinawa
Coordinates: 26.1° North, 127.7° East (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene - Pliocene
10 m.y. bin: Cenozoic 6
Key time interval: Late Miocene - Early Pliocene
Age range of interval: 11.63 - 3.6 m.y. ago
Stratigraphy
Formation:Shimajiri Member:Shinzato Tuff
Local section:Asato
Regional section:Okinawa
Stratigraphic resolution:bed
Stratigraphy comments: The uppermost part of the Shimajiri Formation. The Shinzato is fairly homogeneus, consisting for the most part of sandyy or silty clays with minor partings of ash. Its color ranges from dark gray to light gray. Its maximum known thickness is about 200 ft. The base of the formation is characterized by conglomeratic pumice, and in places chanels cut into the Yonabaru Clay Member.
Lithology and environment
Primary lithology:tuffaceous,gray silty,sandy claystone
Includes fossils?Y
Lithology description: Consists for the most part of sandy or silty clays with minor partings of ash. Its color ranges from dark gray to light gray.
Environment:deep-water indet.
Geology comments: Molluscs found in assemblages of the Shinzato Tuff Member occur in depths as much as 300 m, although some can be in shallower water. Generally the assemblage should be regarded as deep-water.
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 365
Database number:42183
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-07-25 20:03:40 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-07-25 20:03:40
Creative Commons license:CC0
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]