Unit 5 of the Evtropina Formation, Upper Devonian of the Northern Urals, Russia (Devonian of Russian Federation)

Where: Northern Urals, Russian Federation (62.7° N, 54.4° E: paleocoordinates 6.7° N, 12.3° E)

• outcrop-level geographic resolution

When: Palmatolepis gigas zone, Evtropina Formation, Frasnian (382.7 - 372.2 Ma)

• "Evtropiny Noski outcrop is about 330m in length and is formed by a simple, wide syncline, the eastern limb of which is faulted just to the east of the synclinal axis."

Environment/lithology: deep subtidal; gray, green, argillaceous chert

• "Evtropina Formation is interpreted as a relatively deep-water, bathyal sequence."
• "thin and thick, banded, platy cherts and phthanites. The cherts are light and dark grey, greyish green, and green, with thin (up to 2-3cm thick) intercalations of argillite."

Primary reference: V. N. Puchkov, G. Klapper, and T. V. Mashkova. 1981. Natural Assemblages of Palmatolepis from the Upper Devonian of the Northern Urals. Acta Palaeontologica Polonica 26(3-4):281-298 [A. Miller/J. Sessa/A. Miller]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 12330: authorized by Arnold Miller, entered by Jocelyn Sessa on 24.10.2001, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

• Taxa are listed as present in the text.
unclassified
  -
Protozoa
 Entactinaria - Entactiniidae
"Entactinia sp." = Stigmosphaerostylus, "Entactinosphaera aff. cancellicula" = Trilonche cancellicula
"Entactinia sp." = Stigmosphaerostylus Rüst 1892 radiolarian
"Entactinosphaera aff. cancellicula" = Trilonche cancellicula Foreman 1963 radiolarian
Conodonta
 Ozarkodinida - Polygnathidae
Ancyrodella nodosa Ulrich and Bassler 1926 conodont
 Ozarkodinida - Palmatolepidae
Palmatolepis sp. Müller 1956 conodont
Palmatolepis sp. cf. Palmatolepis foliacea
Palmatolepis subrecta Miller and Youngquist 1947 conodont
Palmatolepis gigas Miller and Youngquist 1947 conodont