Yamamba Limestone, Sakawa Basin (Sakagami coll): Roadian, Japan
collected by S. Sakagami 1962

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stenolaemata - Trepostomata - Heterotrypidae
Stenolaemata - Rhabdomesida - Rhabdomesidae
Stenolaemata - Cryptostomida - Girtyporidae
Stenolaemata - Cystoporida - Hexagonellidae
Stenolaemata - Cystoporida - Sulcoreteporidae
see common names

Geography
Country:Japan
Coordinates: 33.5° North, 133.3° East (view map)
Paleocoordinates:8.2° North, 130.1° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Permian Epoch: Guadalupian
Stage: Roadian 10 m.y. bin: Permian 3
Key time interval: Roadian
Age range of interval: 274.4 - 266.9 m.y. ago
Stratigraphy
Formation:Yamamba
Stratigraphic resolution:group of beds
Stratigraphy comments: Chusenella cf. conicocylindrica suggests correlation with Neoschwagerina craticulifera/margaritae zone
Lithology and environment
Primary lithology: lithified "limestone"
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:peel or thin section,field collection
Reason for describing collection:taxonomic analysis
Collectors:S. Sakagami Collection dates:April, 1962
Metadata
Database number:116865
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2011-09-12 14:12:56 Last modified:2025-02-22 15:12:02
Access level:the public Released:2011-09-12 14:12:56
Creative Commons license:CC0
Reference information

Primary reference:
33661. S. Sakagami. 1963. Some Permian Bryozoa from the Yamanba Limestone in the Sakawa Basin, Shikoku, Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 52:155-160 [M. Clapham/M. Clapham]