Poldarsa Formation

Geology

Members: unnamed (4), Isady (2), Kichuga (3), Mikulino (6), Purtovino (1), Strelna (3), Ustpoldarsa (4)

Lithologies: not reported (4), claystone (3), siltstone (2), sandstone (3), marl (1), lime mudstone (1), "limestone" (13)

Paleoenvironments: terrestrial indet. (5), wet floodplain (11), fluvial-lacustrine indet. (5), lacustrine - large (1), lacustrine indet. (1)

Age range: base of the Wuchiapingian to the top of the Late/Upper Severodvinian or 259.90000 to 259.51000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Tatarian266.9 - 257.4Russian Federation (Vologda) (196926)
Late/Upper Severodvinian264.28 - 259.51Russian Federation (Vologda) (189499 187928 189125 189500 233367 233368 233369 233370 233371 233372 233373 233374 233375 233376 233377 233445 233446 233447 233448 233451)
Wuchiapingian259.9 - 254.17Russian Federation (Vologda) (104754 124277)