USGS 17729, Gushichan (RS 347): Calabrian, Japan
collected by Raymond A. Saplis

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Terebratulida - Terebratulidae
Gryphus stearnsi (Dall and Pilsbry 1891)
(2 measurements)
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: 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:bed
Stratigraphy comments: 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 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
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:Raymond A. Saplis
Metadata
Database number:190264
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2017-12-03 21:07:04 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-12-03 21:07:04
Creative Commons license:CC0
Reference information

Primary reference:
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]