Eurypterid-Associated Biota of the Biertdag Formation, Tannu Ola, Tuva (Devonian to of Russian Federation)

Where: Russian Federation (51.5° N, 93.0° E: paleocoordinates 37.2° N, 9.8° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Biertdag Formation, Lochkovian to Lochkovian (419.2 - 407.6 Ma)

• "Lochkovian or Pragian"

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, argillaceous shale and conglomerate

• "Krylova et al. (1967, p. 479) described the environment as 'extensive, shallow-water, salinized reservoirs'. Underlies the BA 1 fauna of the Kureika Suite. The rock types and Leperditia sound like a hypersaline, BA 1 environment"
• "Light gray, argillaceous shale, with conglomerate, siltstone, volcanics"

Size class: macrofossils

Primary reference: N.N. Predtechensky and V.I. Krasnov. 1967. Devonian of Intermontane Depressions in the Altai-Sayan Region. In D. H. Oswald (ed.), International Symposium on the Devonian system 1:463-472 [R. Plotnick/R. Plotnick]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 26990: authorized by Michael Foote, entered by Michael Foote on 11.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Plantae indet. Haeckel 1866
land plants
  - Ctenaenigmatidae
Ctenaenigma sp. Novojilov 1955 barnacle
 Eurypterida - Adelophthalmidae
? Nanahughmilleria sp. Kjellesvig-Waering 1961 eurypterid