Khao Noi, unspecified block (Permian of Thailand)

Where: Thailand (15.3° N, 100.4° E: paleocoordinates 28.1° S, 96.5° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Tak Fa Formation, Wordian (266.9 - 264.3 Ma)

• Yanagida (1964, 1988) reported the presence of the fusulinid Verbeekina verbeeki. However, Fontaine et al. (1994) suggested that the Tak Fa formation has a late Middle Permian (Murghabian) age based on bryozoans, brachiopods and the coral fauna. Verbeekina verbeeki Suggests a Wordian age.

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, shelly/skeletal, gray packstone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the BSP

Collection methods: chemical

Primary reference: C. Ketwetsuriya, A. Nützel, and P. Kanjanapayont. 2016. Permian gastropods from the Tak Fa Limestone, Nakhon Sawan, northern Thailand. Bulletin of Geosciences 91:481-513 [M. Clapham/M. Clapham/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 181783: authorized by Matthew Clapham, entered by Matthew Clapham on 02.10.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Cycloneritida - Trachyspiridae
Trachydomia takhliensis n. sp.
Trachydomia takhliensis n. sp. Nützel and Ketwetsuriya 2016 snail
 Bellerophontida - Bellerophontidae
Bellerophon sp., ? Bellerophon sp., Pharkidonotus khaonoiensis n. sp., Khumerspira thailandensis n. sp., Retispira lyelli
Bellerophon sp. de Montfort 1808 snail
? Bellerophon sp. de Montfort 1808 snail
Pharkidonotus khaonoiensis n. sp. Nützel and Ketwetsuriya 2016 snail
Khumerspira thailandensis n. sp. Nützel and Ketwetsuriya 2016 snail
Retispira lyelli Gemmellaro 1889 snail
 Bellerophontida - Euphemitidae
Euphemites graffhami, Warthia sp., Warthia cf. brevisinuata
Euphemites graffhami Moore 1941 snail
Warthia sp. Waagen 1880 snail
Warthia cf. brevisinuata Waagen 1880 snail
 Heterostropha - Streptacididae
? Streptacis sp.
? Streptacis sp. Meek 1871 snail
 Euomphalina - Euomphalidae
? Euomphalus sp., ? Discotropis sp.
? Euomphalus sp. Sowerby 1814 snail
? Discotropis sp. Yochelson 1956 snail
 Euomphalina - Anomphalidae
Anomphalus lateumbilicatus n. sp.
Anomphalus lateumbilicatus n. sp. Nützel and Ketwetsuriya 2016 snail
 Euomphalina - Microdomatidae
Knightinella sp., Knightinella ornata n. sp., ? Amaurotoma sp., Microdoma carinata n. sp.
Knightinella sp. Licharev 1975 snail
Knightinella ornata n. sp. Nützel and Ketwetsuriya 2016 snail
? Amaurotoma sp. Knight 1945 snail
Microdoma carinata n. sp. Nützel and Ketwetsuriya 2016 snail
 Neritoidea - Naticopsidae
Naticopsis spp.
Naticopsis spp. M'Coy 1844 snail
 Zygopleuroidea - Pseudozygopleuridae
? Pseudozygopleura sp.
? Pseudozygopleura sp. Knight 1930 snail
 Caenogastropoda - Coelostylinidae
Protostylus sp.
 Caenogastropoda - Orthonematidae
Orthonema sp.
Orthonema sp. Meek and Worthen 1862 snail
 Caenogastropoda - Goniasmatidae
Goniasma tricarinata n. sp., Stegocoelia "sp. 1"
Goniasma tricarinata n. sp. Nützel and Ketwetsuriya 2016 snail
Stegocoelia "sp. 1" Donald 1889 snail
 Caenogastropoda - Meekospiridae
Ceraunocochlis sp., Cambodgia acuminata n. sp.
Ceraunocochlis sp. Knight 1931 snail
Cambodgia acuminata n. sp. Nützel and Ketwetsuriya 2016 snail
 Trochoidea - Araeonematidae
Yunnania pulchra n. sp.
Yunnania pulchra n. sp. Nützel and Ketwetsuriya 2016 snail
 Trochoidea - Trochidae
Eocalliostoma sp., Coeloconulus panae
Eocalliostoma sp. Haas 1953 top snail
Coeloconulus panae Nützel and Nakazawa 2012 top snail
 Murchisoniina - Soleniscidae
Cylindritopsis spheroides, Strobeus sp., Soleniscus sp.
Cylindritopsis spheroides Erwin 1988 snail
Strobeus sp. de Koninck 1881 snail
Soleniscus sp. Meek and Worthen 1860 snail
 Murchisoniina - Gosseletinidae
Glabrocingulum magnum n. sp., ? Baylea umbilicata n. sp.
Glabrocingulum magnum n. sp. Nützel and Ketwetsuriya 2016 snail
? Baylea umbilicata n. sp. Nützel and Ketwetsuriya 2016 snail
 Murchisoniina - Eotomariidae
Takfaia kuesi n. gen. n. sp.
Takfaia kuesi n. gen. n. sp. Nützel and Ketwetsuriya 2016 snail