Yamamba Limestone, Sakawa Ciy (Permian of Japan)

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
 Stauriida - Waagenophyllidae
Lonsdaleiastraea yamanbaensis n. sp. Minato 1949 horn coral
Strophomenata
 Orthotetida - Meekellidae
 Productida -
 Productida - Aulostegidae
Rhynchonellata
 Rhynchonellida - Psilocamaridae
Cyrolexis nonakai Yanagida 1973
 Orthida - Schizophoriidae
"Orthotichia indica" = Acosarina minuta Abich 1878
Orthotichia sp. Hall and Clarke 1892
 Orthida - Enteletidae
 Spiriferinida - Spiriferellinidae
 Spiriferinida - Paraspiriferinidae
Callispirina sp. Cooper and Muir-Wood 1951
 Spiriferida - Martiniidae
Martinia sp. M'Coy 1844
 Spiriferida - Elythidae