Where: Trang, Thailand (7.4° N, 99.3° E: paleocoordinates 31.3° S, 107.5° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Rat Buri Formation, Roadian (272.3 - 268.8 Ma)
• Blocks are derived from seacliffs, making it impossible to measure a stratigraphic section or determine whether they are derived from a single horizon. 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; argillaceous, sandy limestone
Size class: macrofossils
Preservation: replaced with silica
Collection methods: bulk, surface (float), 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 40870: authorized by David Bottjer, entered by Matthew Clapham on 02.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
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Apographiocrinus komukensis n. sp.
Apographiocrinus komukensis n. sp. Webster and Jell 1993 Sea lily | |
Contocrinus andamanensis n. sp.
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Clathrocrinidae indet. Strimple and Moore 1971 Sea lily | |
Blastoidea | |
Blastoidea indet. Say 1825 blastoid | |
Gastropoda | |
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"Pleurotomariacea indet." = Pleurotomarioidea
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Bivalvia | |
Pectinoidea indet. Rafinesque 1815 scallop | |
Rhynchonellata | |
Goleomixa acymata Grant 1976 | |
Uncinunellina sp. Grabau 1932 | |
Cruricella couria Grant 1976 | |
Tipispirifer oppilatus Grant 1976 | |
Cleiothyridina tribulosa, "Composita advena" = Posicomta advena
Cleiothyridina tribulosa Grant 1976
"Composita advena" = Posicomta advena Grant 1976 | |
Uncinella sp. Waagen 1883 | |
Hustedia ratburiensis Waterhouse and Piyasin 1970
Hustedia funaria Grant 1976 | |
Callispirina austrina Grant 1976
Paraspiriferina gentilis Grant 1976 | |
Dielasma sp. King 1856 | |
? Notothyris sp. Waagen 1882 | |
Strophomenata | |
"Chonetinella cymatilis" = Neochonetes (Sommeriella) cymatilis
"Chonetinella cymatilis" = Neochonetes (Sommeriella) cymatilis Grant 1976 | |
Acritosia sp. Cooper and Grant 1969 | |
Rigbyella crassa Grant 1976 | |
? Pseudoleptodus sp. Stehli 1956
? Eolyttonia sp. Frederiks 1924 | |
Ceocypea sp. Grant 1972 | |
Stenolaemata | |
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Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Anthozoa | |
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Lophophyllidium sp. Grabau 1928 horn coral | |
Plerophyllum sp. Hinde 1890 horn coral
Ufimia sp. Shtukenberg 1895 horn coral | |
Pseudofavosites sp. Gerth 1922 tabulate coral |