B-10 Namurian fauna, Pa Samed Formation, Thailand (Carboniferous of Thailand)

Where: Satun, Thailand (6.9° N, 99.8° E: paleocoordinates 24.9° S, 124.5° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Pa Samed Formation, Namurian (330.9 - 318.7 Ma)

• The proecanitids are most definite as to age and the material indicates a Carboniferous, Namurian age, and reference should probably be to the Arnsbergian through Yeadenian. That is to Nm1c to Nm2c on the Russian scales and Upper E2 to G1 in the European scale.

• bed-level stratigraphic resolution

Environment/lithology: submarine fan; lithified, tabular, fine-grained sandstone and lithified, lenticular shale

• Stratigraphic section indicates Bouma sequences interbedded with shale units.

•

•The absence from this Namurian fauna of calcareous algae is consistent with a subphotic zone position for the benthos. Relatively moderate brachiopod generic diversity is consistent with a moderately restrictiveenvironment, including one below the photic zone. Notable is the relative rarity of bivalves and gastropods, consistent with a deeper water environment. The overall disarticulated condition of the brachiopods indicates a reasonable level of turbulance and postmortem transport, but the moderate diversity is inconsistent with the mixing of many communities, i.e., the overall amount of net

• Thin bedded, laminated, fine sand with dark gray shale lenses, including a goniatite and brachiopod horizon.

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the BMNH

Primary reference: T. Wongwanich, A. J. Boucot, C. H. C. Brunton, M. R. House, and P. R. Racheboeuf. 2004. Namurian fossils (brachiopods, goniatites) from Satun Province, southern Thailand. Journal of Paleontology 78(6):1072-1085 [N. Heim/N. Heim/N. Heim]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46619: authorized by Noel Heim, entered by Noel Heim on 21.01.2005, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

• The Goniatite section of this paper is not written in the standard systematic format and I am not convinced that the authors are sure of their identifications. The uncertainty comes from statements like: "This material seems best assigned to Stenopronorites cf. uralensis". Because of the uncertainty of the Gonaitite assignments, only orders are listed in fields but genera and species are listed in the comment fields. The brachiopod assignments are good.
Show authors, comments, and common names
Strophomenata
 Productida - Chonopectidae
"Eileenella elegans n. gen. n. sp." = Minutomarginifera elegans
"Eileenella elegans n. gen. n. sp." = Minutomarginifera elegans Wongwanich et al. 2004
 Productida - Productellidae
Aseptella satunensis n. sp.
Aseptella satunensis n. sp. Wongwanich et al. 2004
 Strophomenida - Anopliidae
Tornquistia orthogona n. sp.
Tornquistia orthogona n. sp. Wongwanich et al. 2004
Rhynchonellata
 Spiriferida - Reticulariidae
cf. Reticularia sp.
cf. Reticularia sp. Frederiks 1915
 Spiriferida - Ambocoeliidae
Crurithyris indet.
Crurithyris indet. George 1931
 Spiriferida - Martiniidae
cf. Martinia sp.
cf. Martinia sp. M'Coy 1844
 Spiriferida -
Plicambocoelia tansathieni n. gen. n. sp.
Plicambocoelia tansathieni n. gen. n. sp. Wongwanich et al. 2004
 Rhynchonellida - Stenoscismatidae
Coledium satuni n. sp.
Coledium satuni n. sp. Wongwanich et al. 2004
 Terebratulida - Cranaenidae
Girtyella sp.
Girtyella sp. Weller 1911
Cephalopoda
 Ammonoidea -
Prolecanitida "sp. 1", Prolecanitida "sp. 2"
Prolecanitida "sp. 1" Miller and Furnish 1954 ammonite
Stenopronorites cf. uralensis
Prolecanitida "sp. 2" Miller and Furnish 1954 ammonite
Uralopronorites mirus
 Goniatitida -
Goniatitida indet.
Goniatitida indet. Hyatt 1884 ammonite
Syngastrioceras sp. indet.
 Goniatitida - Neoglyphioceratidae
"Neoglyphioceras subcirculare" = Lusitanites subcircularis
"Neoglyphioceras subcirculare" = Lusitanites subcircularis Miller 1889 ammonite
ISS-LN-ST-025