Llandeilian brachiopods of Mongolian Altai, Tonkhul (Ordovician of Mongolia)

Where: Mongolia (46.0° N, 93.3° E: paleocoordinates 19.7° N, 26.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Christiania subquadrata beds Formation, Llandeilo (466.0 - 449.5 Ma)

• Agachulinskye Horizon

Environment/lithology: marine; siliciclastic sediments and tuff

Size classes: macrofossils, mesofossils

Preservation: cast

Primary reference: K.h. S. Rozman and L. G. Severgina. 1983. Llandeylovskiye brakhiopodovye kompleksy Mongolskogo i Gornogo Altaya. Llandeilian brachiopods assemblages of Mongolian and Gorny Altai. Trudy - Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 20:14-25 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45985: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 17.12.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Christianiidae
 Strophomenida - Strophomenidae
? Rhipidomena sp. Cooper 1956
 Strophomenida - Leptellinidae
"Leptellina semilunata" = Leptellina (Leptellina) semilunata
"Leptellina semilunata" = Leptellina (Leptellina) semilunata Williams 1962
 Strophomenida - Sowerbyellidae
 Strophomenida - Plectambonitidae
Isophragma extensum Cooper 1956
 Billingsellida - Clitambonitidae
Atelelasma subdorsoconvexum Rozman and Severgina 1983
Rhynchonellata
 Orthida - Hesperorthidae