Khao Phrik, Locality 3, Rat Buri (Permian of Thailand)

Where: Ratchaburi, Thailand (13.5° N, 99.7° E: paleocoordinates 28.9° S, 98.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Rat Buri Formation, Wordian (268.8 - 265.1 Ma)

• 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; lithified, argillaceous limestone and lithified, black, argillaceous, carbonaceous limestone

• Fore-reef that is relatively open to the sea
• Two kinds of rock: muddy pale limestone and a black limestone that left a large residue of carbonaceous clay

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Yanagida, S. Sakagami in 1965-1966

Collection methods: bulk, chemical,

Primary reference: S. Sakagami. 1968. Permian Bryozoa from Khao Phrik, near Rat Buri, Thailand. Geology and Palaeontology of Southeast Asia 4:45-66 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116879: authorized by Matthew Clapham, entered by Matthew Clapham on 13.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Hapsiphyllidae
Allotropiophyllum sp. Grabau 1928 horn coral
Strophomenata
 Orthotetida - Meekellidae
Meekella colpata1 Grant 1976
 Strophomenida - Rugosochonetidae
"Neochonetes sakagamii n. sp." = Waterhouseiella speciosa3, "Ratburia komalarjuni n. gen. n. sp." = Striochonetes scutella3
"Neochonetes sakagamii n. sp." = Waterhouseiella speciosa3 Waterhouse and Piyasin 1970
"Ratburia komalarjuni n. gen. n. sp." = Striochonetes scutella3 Waterhouse and Piyasin 1970
 Productida -
"Marginifera otaria" = Marginifera (Otariella) otaria1
"Marginifera otaria" = Marginifera (Otariella) otaria1 Grant 1976
 Productida - Echinoconchidae
Bilotina acantha1 Waterhouse and Piyasin 1970
 Productida - Lyttoniidae
Leptodus sp.3 Kayser 1883
Rhynchonellata
 Orthida - Schizophoriidae
"Orthotichia waterhousei" = Kotlaia waterhousei1
"Orthotichia waterhousei" = Kotlaia waterhousei1 Grant 1976
 Spiriferinida - Spiriferellinidae
"Spiriferellina adunctata" = Spiriferellina aduncata1
"Spiriferellina adunctata" = Spiriferellina aduncata1 Waterhouse and Piyasin 1970
 Spiriferinida - Paraspiriferinidae
 Spiriferida - Elythidae
 Athyridida - Neoretziidae
"Hustedia nakornsrii n. sp." = Hustedia ratburiensis3
"Hustedia nakornsrii n. sp." = Hustedia ratburiensis3 Waterhouse and Piyasin 1970
 Athyridida - Athyrididae
 Terebratulida - Gillediidae
 Terebratulida - Dielasmatidae
? Dielasma sp.3 King 1856
 Terebratulida - Notothyrididae
Notothyris triplax1 Grant 1976
Stenolaemata
 Cystoporata - Fistuliporidae
Fistulipora sp., "Fistulipora ramosa" = Fistulipora horowitzi
Fistulipora sp. McCoy 1850
"Fistulipora ramosa" = Fistulipora horowitzi Sakagami 1970
 Cryptostomata - Acanthocladiidae
 Cryptostomata - Fenestellidae
"Fenestella megacapillaris n. sp." = Alternifenestella megacapillaris
"Fenestella megacapillaris n. sp." = Alternifenestella megacapillaris Sakagami 1968
 Cryptostomata - Hyphasmoporidae
? Streblotrypa crassa n. sp., Ogbinopora sp.2, "Streblascopora ratburiensis n. sp." = Ogbinopora ratburiensis
? Streblotrypa crassa n. sp. Sakagami 1968
Ogbinopora sp.2 Shishova 1965
"Streblascopora ratburiensis n. sp." = Ogbinopora ratburiensis Sakagami 1968
 Rhabdomesida - Rhabdomesidae
Ascopora nakornsrii n. sp. Sakagami 1968
Ascopora asiatica n. sp. Sakagami 1968
Ascopora yanagidae n. sp. Sakagami 1968
Ascopora magna n. sp. Sakagami 1968
 Cystoporida - Hexagonellidae
Hexagonella robusta n. sp. Sakagami 1968
Hexagonella khaophrikensis n. sp. Sakagami 1968