Umphang location 1 (Jurassic of Thailand)

Where: Thailand (16.0° N, 98.7° E: paleocoordinates 16.7° N, 104.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Klo Tho Formation (Umphang Group), Early/Lower Toarcian (183.0 - 182.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: coastal; mudstone

Size class: macrofossils

Primary reference: T. Kozai, F. Hirsch, K. Ishida and A. Meesook. 2006. Faunal affinity of Toarcian-Aalenian (Early Jurassic) bivalves from Mae Sot and Umphang (Tak Province), Northwestern Thailand. Geosciences Journal 10(3):205-215 [W. Kiessling/M. Nimke]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 87539: authorized by Wolfgang Kiessling, entered by Madeleine Nimke on 19.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pholadomyida - Pholadomyidae
 Cardiida - Cardiidae
 Carditida - Astartidae
 Trigoniida - Myophorelloidae
 Mytilida - Mytilidae
 Pectinida - Pectinoidae
"Parvamussium donaiense" = Pecten (Amussium) donaiensis Mansuy 1914 scallop
 Ostreida - Bakevelliidae
Kobayashites aff. hemicylindricus Hayami and Muster 1995 oyster
 Arcida - Parallelodontidae