Huai Tak 16F, Lampang Province (Permian of Thailand)

Where: Thailand (18.6° N, 99.9° E)

• Paleocoordinates: 19.0° S, 90.2° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Huai Tak Formation (Ngao Group), Changhsingian (254.1 - 251.9 Ma)

• Huai Tak Formation is uppermost of Ngao Group, overlain by latest Permian volcanics and Triassic Lampang Group.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Preservation: mold/impression

Primary reference: J. B. Waterhouse. 1983. A Late Permian lyttoniid fauna from northwest Thailand. Papers - Department of Geology, University of Queensland 10(3):111-153 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42777: authorized by David Bottjer, entered by Matthew Clapham on 05.08.2004

Creative Commons license: CC0 (CC0)

Taxonomic list

• Only includes brachiopods. Fusilinids and conodonts are absent, as are corals, gastropods, and bryozoans. A number of pteriiform and myalinid bivalves and rare ammonoid impressions are present.
Show authors, comments, and common names
Cephalopoda
 Ammonoidea -
Ammonoidea indet.
Ammonoidea indet. ammonite
Possibly present
Bivalvia
 Autobranchia -
Pterioida indet.
Pterioida indet. Newell 1965 clam
Pteriiform bivalve
 Myalinida - Myalinidae
Myalinidae indet.
Myalinidae indet. Frech 1891 clam
Rhynchonellata
 Athyridida - Athyrididae
Septospirigerella felinella, "Araxathyris cf. bisulcata" = Juxathyris bisulcata
"Araxathyris cf. bisulcata" = Juxathyris bisulcata Liao 1980
 Spiriferida - Choristitidae
"Semibrachythyrina anshunensis" = Alphaneospirifer anshunensis
"Semibrachythyrina anshunensis" = Alphaneospirifer anshunensis Liao 1980
 Spiriferida - Ambocoeliidae
Attenuatella piyasini
Attenuatella piyasini Waterhouse 1983
Strophomenata
 Orthotetida - Schuchertellidae
Erismatina cooperi
Erismatina cooperi Waterhouse 1983
 Productida - Lyttoniidae
Oldhamina squamosa
Oldhamina squamosa Huang 1932
 Productida -
"? Chonopectoides sp." = Chonopectella
"? Chonopectoides sp." = Chonopectella Sarycheva 1966
 Productida - Paucispiniferidae
Lampangella lata, Transennatia pitakpaivani
Lampangella lata Waterhouse 1983
Transennatia pitakpaivani Waterhouse 1983
 Productida -
Spinomarginifera "sp. A", Spinomarginifera kueichowensis, Spinomarginifera plana n. sp.
Spinomarginifera plana n. sp. Waterhouse 1983
 Productida - Monticuliferidae
Compressoproductus pentagonalis n. sp., Sarytchevinella tenuissima
Compressoproductus pentagonalis n. sp. Waterhouse 1983
Sarytchevinella tenuissima Waterhouse 1983
 Productida - Aulostegidae
? Glyptosteges percostatus n. sp.
? Glyptosteges percostatus n. sp. Waterhouse 1983
Trilobita
 Proetida - Phillipsiidae
Pseudophillipsia (Nodiphillipsia) aff. ozawai
Pseudophillipsia (Nodiphillipsia) aff. ozawai Kobayashi and Hamada 1984 trilobite