Khao Phrik, 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 (266.9 - 264.3 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 Waterhouse, Komalarjun, Nakinbodi, Sripatanavat in November, 1964

Collection methods: bulk, chemical,

Primary reference: J. B. Waterhouse and S. Piyasin. 1970. Mid-Permian brachiopods from Khao Phrik, Thailand. Palaeontographica Abteilung A 135(3-6):83-197 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40954: authorized by David Bottjer, entered by Matthew Clapham on 04.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Derbyiidae
Derbyia sp.2 Waagen 1884
1DV, 1C
Derbyia sp.2 Waagen 1884
1 VV
Diplanus (Miniplanus) minuta n. sp. Waterhouse and Piyasin 1970
21VV, 29DV, 5C
 Orthotetida - Schuchertellidae
Streptorhynchus khwaense2 Grant 1976
7VV, 2C
 Orthotetida - Meekellidae
Meekella colpata2 Grant 1976
2VV, 2DV
 Productida - Productellidae
Echinauris sp. Muir-Wood and Cooper 1960
2DV
 Productida - Linoproductidae
Linoproductus kaseti2 Grant 1976
5 VV
 Productida - Monticuliferidae
? Compressoproductus sp. Sarytcheva 1960
1VV
Asperlinus asperulus Waagen 1884
10VV, 5DV
 Productida -
"Marginifera drastica" = Marginifera (Marginifera) drastica2, "Marginifera otaria" = Marginifera (Otariella) otaria2
"Marginifera drastica" = Marginifera (Marginifera) drastica2 Grant 1976
4VV, 1DV, 1C
"Marginifera otaria" = Marginifera (Otariella) otaria2 Grant 1976
8VV, 5DV, 5C
 Productida - Echinoconchidae
"Septasteges acanthus n. gen. n. sp." = Bilotina acantha
"Septasteges acanthus n. gen. n. sp." = Bilotina acantha Waterhouse and Piyasin 1970
1VV, 6DV, 1C
 Productida - Richthofeniidae
Globosobucina scopae n. gen. n. sp. Waterhouse and Piyasin 1970
1C
 Productida - Lyttoniidae
Leptodus sp. Kayser 1883
5VV, 9DV
 Productida - Aulostegidae
Ramavectus pumwarni2 Grant 1976
11DV
Chonosteges thailandica n. sp. Waterhouse and Piyasin 1970
2VV, 2DV, 3C
? Xenosteges sp. Muir-Wood and Cooper 1960
1VV, 1C
 Strophomenida - Rugosochonetidae
Striochonetes scutella n. gen. n. sp., Linshuichonetes elfinis1, "Waagenites speciosus" = Waterhouseiella speciosa
Striochonetes scutella n. gen. n. sp. Waterhouse and Piyasin 1970
42VV, 42DV, 62C
Linshuichonetes elfinis1 Campi and Shi 2002
Waagenites speciosus Partim - Pl 17, figs 12-25 Only
"Waagenites speciosus" = Waterhouseiella speciosa Waterhouse and Piyasin 1970
36VV, 36DV, 79C
Rhynchonellata
 Spiriferida - Elythidae
Permophricodothyris notialasiatica2 Grant 1976
13VV, 6DV, 1C
Anomaloria glomerosa2 Grant 1976
Phricodothyris attenuata Reed Partim - Pl 26, figs 9,14,15,18 Only
 Spiriferida - Ambocoeliidae
Orbicoelia fraterculus n. gen. n. sp.
Orbicoelia fraterculus n. gen. n. sp. Waterhouse and Piyasin 1970
11VV, 4DV, 1C
 Spiriferida - Trigonotretidae
Neospirifer sp.2 Fredericks 1919
3VV, 1DV
 Spiriferida - Crassumbidae
Rorespirifer ruinosus n. gen. n. sp.
Rorespirifer ruinosus n. gen. n. sp. Waterhouse and Piyasin 1970
3VV, 1DV, 1C
 Orthida - Schizophoriidae
"Orthotichia waterhousei" = Kotlaia waterhousei2
"Orthotichia waterhousei" = Kotlaia waterhousei2 Grant 1976
10VV, 7DV, 4 C
 Orthida - Rhipidomellidae
Rhipidomella cordialis2 Grant 1976
1 Dorsal Valve, 1 Conjoined
 Spiriferinida - Punctospiriferidae
? Punctospirifer sp. North 1920
1 VV
 Spiriferinida - Spiriferellinidae
Spiriferellina aduncata n. sp. Waterhouse and Piyasin 1970
84VV, 71DV, 81C
 Terebratulida - Gillediidae
Hemiptychina mintrita2 Grant 1976
3C
 Terebratulida - Cranaenidae
Pontielasma praeundatum n. gen. n. sp.
Pontielasma praeundatum n. gen. n. sp. Waterhouse and Piyasin 1970
3VV, 4DV, 9C
 Terebratulida - Notothyrididae
Notothyris triplax n. sp.2 Grant 1976
20VV, 19DV, 19C
 Rhynchonellida -
Rhynchonellida indet. Kuhn 1949
1VV, 5C
 Rhynchonellida - Allorhynchidae
"Wellerella naliensis" = Allorhynchus naliensis
"Wellerella naliensis" = Allorhynchus naliensis Reed 1944
2VV, 2DV, 6C
 Athyridida - Athyrididae
Cleiothyridina seriata2 Grant 1976
7VV, 2DV, 2C
 Athyridida - Diplospirellidae
Uncinella siamestris2 Grant 1976
1C
 Athyridida - Neoretziidae
Hustedia ratburiensis n. sp. Waterhouse and Piyasin 1970
1VV, 5DV, 15C
Gastropoda
  -
 Zygopleuroidea - Pseudozygopleuridae
? Hyphantozyga khaophrikensis n. sp.3 Ketwetsuriya et al. 2020 snail
 Caenogastropoda - Imoglobidae
Chlorozyga asiatica n. sp.3 Ketwetsuriya et al. 2020 snail
 Sorbeoconcha - Procerithiidae
? Procerithium inaequetuberculata n. sp.3 Ketwetsuriya et al. 2020 snail
 Caenogastropoda - Goniasmatidae
Goniasma sp.3 Tomlin 1930 snail
? Stegocoelia "sp. 1"3 Donald 1889 snail
? Stegocoelia "sp. 2"3 Donald 1889 snail
Stegocoelia centrosinuata n. sp.3 Ketwetsuriya et al. 2020 snail
 Caenogastropoda - Meekospiridae
? Meekospira "sp. 1"3 Ulrich and Scofield 1897 snail
? Meekospira "sp. 2"3 Ulrich and Scofield 1897 snail
 Caenogastropoda - Coelostylinidae
 Bellerophontida - Euphemitidae
Euphemites sp.3 Warthin 1930 snail
Warthia cf. saundersi3 Yochelson 1960 snail
 Bellerophontida - Bellerophontidae
? Bellerophon sp.3 de Montfort 1808 snail
Retispira khaophrikensis n. sp.3 Ketwetsuriya et al. 2020 snail
Retispira lyelli3 Gemmellaro 1889 snail
 Heterostropha - Streptacididae
? Streptacis sp.3 Meek 1871 snail
 Heterostropha - Donaldinidae
? Yoospira "sp. 1"3 Bandel 2002 snail
? Yoospira "sp. 2"3 Bandel 2002 snail
 Seguenzioidea - Eucyclidae
? Eucycloscala sp.3 Cossmann 1895 snail
 Trochoidea - Trochidae
Coeloconulus panae3 Nützel and Nakazawa 2012 top snail
 Euomphalina - Elasmonematidae
Kimina sp.3 Yoo 1994 snail
 Euomphalina - Microdomatidae
? Amaurotoma multispirata n. sp.3 Ketwetsuriya et al. 2020 snail
 Murchisoniina - Lophospiridae
"? Worthenia waterhousei n. sp." = Yiningicus waterhousei3
"? Worthenia waterhousei n. sp." = Yiningicus waterhousei3 Ketwetsuriya et al. 2020 snail
 Murchisoniina - Phymatopleuridae
"Worthenia cf. crenulunula" = Worthenia crenilunula3
"Worthenia cf. crenulunula" = Worthenia crenilunula3 Yoo 1994 snail
 Murchisoniina - Porcelliidae
Hesperiella cyrtocostata n. sp.3 Ketwetsuriya et al. 2020 snail
 Murchisoniina - Gosseletinidae
Peruvispira sp.3 Chronic 1949 snail
Eoplatyzona ratchaburiensis n. sp.3 Ketwetsuriya et al. 2020 snail
Ananias sp.3 Knight 1945 snail
 Murchisoniina - Soleniscidae
Soleniscus "sp. 1"3 Meek and Worthen 1860 snail
? Soleniscus "sp. 2"3 Meek and Worthen 1860 snail
Leptoptygma sp.3 Knight 1936 snail
 Murchisoniina - Palaeozygopleuridae
 Neritoidea - Naticopsidae
Naticopsis sp.3 M'Coy 1844 snail