ammonites
Unit 14 of the Evtropina Fm, Upper Devonian of Northern Urals (Devonian of Russian Federation)

Where: Northern Urals, Russian Federation (62.7° N, 54.4° E: paleocoordinates 9.0° N, 12.9° E)

• outcrop-level geographic resolution

When: Palmatolepis rhomboidea zone, Evtropina Formation, Early/Lower Famennian (376.1 - 370.6 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; green, blue, argillaceous, calcareous, cherty/siliceous mudstone and conglomeratic limestone

• "Evtropina Formation is interpreted as a relatively deep-water, bathyal sequence."
• "greenish and bluish grey argillaceous, cherty shales with a layer of dense argillite. At the top of the shales there is a bed of medium crystalline limestone of conglomerate-like nodular structure, 0.3 m thick."

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 12338: authorized by Arnold Miller, entered by Jocelyn Sessa on 25.10.2001