Where: Ratchaburi, Thailand (13.4° N, 99.8° E: paleocoordinates 30.9° S, 100.5° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Rat Buri Formation, Roadian (272.3 - 268.8 Ma)
• Blocks sampled were either "in place" in the limestone mass; others were from float. But because the jungle terrain makes measurement of stratigraphic sections difficult, the stratigraphy is unknown. The age of the Rat Buri fauna is problematic. "Rat Buri" limestones likely range in age from Kungurian through Capitanian to perhaps Wuchiapingian. Wordian fusulinids appear most common in other collections, but are not found in association with the brachiopod localities. The brachopod fauna is most similar to the Wordian Amb Formation of the Salt Range, in Pakistan, tentatively indicating a Wordian age.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore shelf; black, argillaceous, carbonaceous limestone
Size class: macrofossils
Preservation: replaced with silica
Collection methods: bulk, surface (float), surface (in situ), chemical,
Primary reference: R. E. Grant. 1976. Permian brachiopods from southern Thailand. Paleontological Society Memoir 9:1-269 [D. Bottjer/M. Clapham/M. Clapham]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 40867: authorized by David Bottjer, entered by Matthew Clapham on 02.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
"Marginifera otaria" = Marginifera (Otariella) otaria
"Marginifera otaria" = Marginifera (Otariella) otaria Grant 1976 | |
Rhynchonellata | |
"Composita subsolana" = Posicomta subsolana
"Composita subsolana" = Posicomta subsolana Grant 1976 | |
Uncinella siamestris Grant 1976 | |
"Spiriferellina adunctata" = Spiriferellina aduncata
"Spiriferellina adunctata" = Spiriferellina aduncata Waterhouse and Piyasin 1970 |