Where: Japan (33.5° N, 133.3° E: paleocoordinates 18.7° N, 104.0° E)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Yamamba Limestone Formation, Roadian (272.3 - 268.8 Ma)
• Correlated with Neoschwagerina douvillei-N. margaritae subzone
• group of beds-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Collected by Nonaka in 1946
Primary reference: J. Yanagida. 1973. Late Permian brachiopods from the Yamamba Limestone in the Sakawa Basin, Shikoku, Japan. Science Report of Tohoku University, 2nd series (Geology), Special Volume 6:353-369 [T. Olszewski/L. Fall/L. Fall]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 52093: authorized by Tom Olszewski, entered by Leigh Fall on 21.07.2005, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Lonsdaleiastraea yamanbaensis n. sp. Minato 1949 horn coral | |
Strophomenata | |
Spinomarginifera aff. ciliata Arthaber 1900 | |
Edriosteges cf. poyangensis Kayser 1883 | |
Rhynchonellata | |
Cyrolexis nonakai Yanagida 1973 | |
"Orthotichia indica" = Acosarina minuta Abich 1878
Orthotichia sp. Hall and Clarke 1892
Orthotichia cf. derbyi Waagen 1884 | |
Enteletes aff. andrewsi Grabau 1931 | |
Callispirina sp. Cooper and Muir-Wood 1951 | |
Martinia sp. M'Coy 1844
Martinia rhomboidalis Girty 1908 | |
Phricodothyris "sp. A", Phricodothyris "sp. B", Phricodothyris cf. asiatica, Phricodothyris cf. subrostrata
Phricodothyris "sp. A" George 1932
Phricodothyris "sp. B" George 1932
Phricodothyris cf. asiatica Chao 1929
Phricodothyris cf. subrostrata Grabau 1936 |