USGS 17482b, Chinen-misaki (FSM 28): Calabrian, Japan
collected by F. Stearns MacNeil

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Turbinidae
Gastropoda - Colloniidae
Gastropoda - Liotiidae
Gastropoda - Neogastropoda - Mangeliidae
Gastropoda - Neogastropoda - Pseudomelatomidae
Gastropoda - Neogastropoda - Olividae
Gastropoda - Neogastropoda - Columbellidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Neogastropoda - Cancellariidae
Gastropoda - Tonnidae
Gastropoda - Eulimidae
Gastropoda - Heterostropha - Pyramidellidae
Rhynchonellata - Terebratulida - Cancellothyrididae
Terebratulina sp. d'Orbigny 1847
Cooper 1957
Terebratulina japonica (Sowerby 1846)
Cooper 1957
see common names

Geography
Country:Japan State/province:Okinawa
Coordinates: 26.2° North, 127.8° East (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Quaternary Epoch: Pleistocene
Stage: Calabrian 10 m.y. bin: Cenozoic 6
Key time interval: Calabrian
Age range of interval: 1.8 - 0.774 m.y. ago
Stratigraphy
Geological group:Ryukyu Formation:Chinen
Stratigraphic resolution:group of beds
Stratigraphy comments: Middle part. Lower sand units were formely included in the Shimajiri beds, but they are disconformable with the underlying Shimajiri Formation. The lower sandy and silty part of the Ryukyu Group is divided into two elements, the Nakoshi Sand and the Chinen Sand. Presumably the two members are equivalent in age, but they are laterally not related. The Chinen sand is light gray to dark gray and more uniformely fine than the Nakoshi, and can have fine silt partings. Chinen sand belongs to calcareous nannoplankton zone CN13a and planktonic foram zone N22 (Ujiié, 1994), indicating a Calabrian age.
Lithology and environment
Primary lithology:fine,gray unlithified silty sandstone
Includes fossils?Y
Lithology description: Light gray to dark gray, uniformely fine, can have fine silt partings.
Environment:marine indet.
Glacial or sequence phase:transgressive
Geology comments: Probably reworked Shimajiri material during a transgression. Its deposition was followed immediately by a period during which reefs flourished and large ares were strewn with reef detritus.
Taphonomy
Modes of preservation:body,original aragonite
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collectors:F. Stearns MacNeil
Taxonomic list comments:Exhaustive for gastropoda. No bivalves.
Metadata
Database number:42235
Authorizer:A. Hendy, M. Clapham Enterer:A. Hendy, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2004-07-26 21:33:20 Last modified:2025-02-22 15:12:02
Access level:group members Released:2005-07-26 21:33:20
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]

Secondary references:

39467 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]