Shigeyasu Mine, Akiyoshi, Unit B: Roadian, Japan
collected by S. Sakagami 1962

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Hydrozoa - Nigriporellidae
Tubiphytes sp. Maslov 1956
Cyanophyceae - Aphralysiaceae
see common names

Geography
Country:Japan
Coordinates: 34.3° North, 131.3° East (view map)
Paleocoordinates:9.7° North, 129.0° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Permian Epoch: Guadalupian
Stage: Roadian 10 m.y. bin: Permian 3
Key time interval: Roadian Zone:  Neoschwagerina craticulifera robusta
Age range of interval: 274.4 - 266.9 m.y. ago
Stratigraphy
Formation:Akiyoshi
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified "limestone"
Secondary lithology: packstone
Lithology description: light-grey limestone composed mainly of boundstone and associated grainstone/packstone
Environment:reef, buildup or bioherm
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:Spring, 1962
Metadata
Also known as:Reef 4048
Database number:173375
Authorizer:W. Kiessling Enterer:M. Krause
Modifier:M. Krause Research group:marine invertebrate
Created:2015-09-22 02:51:13 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-09-22 02:51:13
Creative Commons license:CC0
Reference information

Primary reference:
56451. T. Nakazawa, T. Igawa, K. Ueno and M. Fujikawa. 2015. Middle Permian sponge–microencruster reefal facies in the mid-Panthalassan Akiyoshi atoll carbonates: observations on a limestone slab. Facies (61) [W. Kiessling/M. Krause/P. Wagner]