Tapsa River basin, Vadi-Bala creek, Section 226, Il'chir Formation, Band 3 (Cambrian of Russian Federation)

Also known as Reef 3416

Where: Tuva, Russian Federation (51.9° N, 94.4° E: paleocoordinates 6.5° S, 5.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Il'chir Formation, Atdabanian (521.0 - 516.0 Ma)

• Band 3 (about 150m thick) is confined to the thick organogenic massif (Il'chir Fm.) Atdabanian. Possible correlation with Nochoroicyathus mariinski zone in the Batenevskiy Kryazh area.

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, dolomitic limestone

• Limestones, dolotimized, massive, archaeeocyathis-algal, white, gray or cherry-red, and also limestone breccias and bioherms with archaeocyathids, which are evenly distributed through the band.

Size class: macrofossils

Collection methods: The specimens are housed in the Chernyshev Central Scientific Research Geological Prospecting Museum (TsNIGRmuzey) in St. Petersburg.

Primary reference: D. V. Kotel'nikov. 1995. New archaeocyathids from the Lower Cambrian Vadi-Bala organogenic complex (Central Tuva). Paleontological Journal 29(2):22-33 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51431: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 05.06.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only Archaeocyathids.
 Monocyathida - Monocyathidae
Archaeolynthus sp. Taylor 1910 archaeocyath sponge
 Ajacicyathida - Dokidocyathidae
Dokidocyathus sp. Taylor 1910 archaeocyath sponge
 Ajacicyathida - Densocyathidae
Natalijaecyathus vadibalaensis n. gen. n. sp. archaeocyath sponge
 Ajacicyathida - Ethmocyathidae
Carpicyathus "sp. 1" archaeocyath sponge
sp. 1
Carpicyathus singularis n. sp. archaeocyath sponge
Degeletticyathus sp. archaeocyath sponge
Degeletticyathus postremus n. sp. archaeocyath sponge
Degeletticyathus bukharovi n. sp. archaeocyath sponge
Inessocyathus sp. archaeocyath sponge
 Ajacicyathida - Bipallicyathidae
Bipallicyathus manifestus archaeocyath sponge
 Ajacicyathida - Ajacicyathidae
Rotundocyathus sp. Vologdin 1960 archaeocyath sponge
Rotundocyathus tapsaensis n. sp. archaeocyath sponge
Orbicyathus enormis n. sp. archaeocyath sponge
Nochoroicyathus concinnus archaeocyath sponge
Nochoroicyathus chassactuensis archaeocyath sponge
Nochoroicyathus directus archaeocyath sponge
Nochoroicyathus korovnikovi archaeocyath sponge
 Ajacicyathida - Torosocyathidae
Torosocyathella osadchajae n. gen. n. sp. archaeocyath sponge
 Ajacicyathida - Jakutocarinidae
Jakutocarinus splendidus n. sp. archaeocyath sponge
 Ajacicyathida - Tumulifungiidae
Sclerocyathus floridus archaeocyath sponge
 Ajacicyathida - Pretiosocyathidae
Pretiosocyathus sergunenkovi n. sp. archaeocyath sponge
Pretiosocyathus toltschiensis Osadchaya et al. 1979 archaeocyath sponge
 Capsulocyathida - Alataucyathidae
Alataucyathus verschkovskajae archaeocyath sponge
 Archaeocyathida - Archaeopharetridae
Archaeopharetra marginata archaeocyath sponge
Dictyosycon sp. archaeocyath sponge
Dictyosycon radiatus archaeocyath sponge
 Archaeocyathida - Dictyocyathidae
Dictyocyathus sp. archaeocyath sponge
 Archaeocyathida - Loculicyathidae
Cambrocyathellus neiburgianus archaeocyath sponge
Cambrocyathellus tuberculatus archaeocyath sponge
Cambrocyathellus similiseptus archaeocyath sponge
"Alconeracyathus sp." = Okulitchicyathus archaeocyath sponge