Toyoma-cho, Toyoma-gun, Toyoma formation (Permian to of Japan)

Where: Japan (38.7° N, 141.3° E: paleocoordinates 31.4° N, 117.2° E)

When: Toyoma Formation, Wuchiapingian to Wuchiapingian (259.9 - 252.2 Ma)

Environment/lithology: marine; black shale

Size class: macrofossils

Primary reference: M. Goto. 1994. Palaeozoic and early Mesozoic fish faunas of the Japanese Islands. The Island Arc 3(1994):247-254 [M. Clapham/P. Vazquez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133502: authorized by Matthew Clapham, entered by Priscilla Vazquez on 14.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Eugeneodontiformes - Helicampodontidae
Helicampodus sp. Branson 1935 chimaera