Where: Arkhangelsk, Russian Federation (64.7° N, 39.0° E: paleocoordinates 62.0° S, 21.5° E)
• coordinate estimated from map
When: White Sea other zone, Verkhovka Formation, Ediacaran (635.0 - 542.0 Ma)
Environment/lithology: prodelta; lithified sandstone and lithified shale
•This assemblage comprises packages (1.0–1.5 m) of gray and yellowishgray, fine-grained, thin-bedded sandstone units (0.1–0.5 m) interbedded with intervals (0.3–0.5 m up to 2 m thick) of graded siltstoneshale couplets and abundant gutter casts. The sandstone beds have sharp bases, fine upwards, and have rippled tops. Thinner beds tend to consist of fine horizontal laminations. Some of them contain gently curved laminasets which probably represent hummocky stratification. However, thicker units exhibit fining-upward textures, convoluted laminations, amalgamation surfaces, ball-and-pillow structure, isolated shale clasts, and wave ripple laminations.
Primary reference: D. Grazhdankin. 2004. Patterns of distribution in the Ediacaran biotas: facies versus biogeography and evolution. Paleobiology 30(2):203-221 [M. Laflamme/M. Laflamme] more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 91643: authorized by Marc Laflamme, entered by Marc Laflamme on 10.10.2009