Where: Thailand (17.6° N, 101.9° E: paleocoordinates 20.1° S, 99.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Nam Maholan Formation, Artinskian (290.1 - 279.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Primary reference: M. Fujikawa and T. Ishibashi. 2006. Early Permian ammonoids from the Loei area, northeastern Thailand. Bulletin of the Akiyoshidai Museum of Natural History 41:5-9 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82286: authorized by Matthew Clapham, entered by Matthew Clapham on 25.07.2008

Creative Commons license: CC BY (attribution)