• "Unit K7/21 Interval 24.75-27.25m Thickness 2.50m

•Bed no. 21, Shikhany of Noinsky (1899, 1924)

•Dolostone: the same as in unit K6/21 (see Collection no. 197540); complete thickness of Member E (Shikhany Member) varies from 2 to 4m.

•Unit K7/22 Interval 27.25-29.25m Thickness 2.00m

•Dolostones and marls with faint buckled lamination and local rip-up breccia. Base unconformable, erosional. The unit can be divided into five parts, from base to top:

•Bed K7/22-1 Interval 27.25-27.35m [0.00-0.10] Thickness 0.10m

•Conglomerate of flat subrounded clasts (up to 1cm in size) of marls and shales in silty shale matrix, up to 20cm in thickness, grading laterally to dolomarl with floating dolostone clasts.

•Bed K7/22-2 Interval 27.35-28.05m [0.10-0.80] Thickness 0.70m

•Dolomarl: soft pale, yellowish grey, locally with breccia fabric, in polished slabs showing faint buckled lamination.

•Bed K7/22-3 Interval 28.05-28.45m [0.80-1.20] Thickness 0.40m

•Dolostone: yellowish grey, resistant, with vugs and rusty staining 25cm from the base.

•Bed K7/22-4 Interval 28.45-28.65m [1.20-1.40] Thickness 0.20m

•Alternation of pale grey dolostones and dark grey dolomarls forming 2-3cm thick laminae; the dark grey laminae contain sooty organic matter.

•Bed K7/22-5 Interval 28.65-29.25m [1.40-2.00] Thickness 0.60m

•Dolostone: yellowish grey, with small (2-3cm) chert nodules in the middle, enriched in horizontally oriented bioclasts.

•Unit K7/23 Interval 29.25-30.00m Thickness 0.75m

•Dolostone: grey, argillaceous, locally with fine sand admixture, fine-grained, with faint undulating lamination, with rare bioclasts, with shale 2-3cm thick seams in the middle. Polished slabs from the base show very fine-grained laminated oolitic texture with rare bioclasts. The main part of the bed above the base shows mudstone texture. No fossils.

•Unit K7/24 Interval 30.00-32.10m Thickness 2.10m

•Dolomarl-dolostone alternation: yellowish grey, recessive dolomarls are darker and resistant dolostones are lighter coloured. Dolostones are mostly soft, locally cherty, include 2-3cm thick beds of harder fragile partly cherty dolostones. A 10cm thick cherty stromatolithic dolostone at the top. Polished slabs show fine grainy texture and levels of buckled lamination with "teepee" structures.

•Unit K7/25 Interval 32.10-34.60m Thickness 2.50m

•Dolostone: grey, argillaceous, very fine-grained, finely fractured, with ferruginised fracture planes, more argillaceous and grading to sandstone at the top. The upper sandstone locally hosts numerous bivalve and brachiopod valves. The unit can be divided into seven parts, from base to top:

•Bed K7/25-1 Interval 32.10-32.25m [0.00-0.15] Thickness 0.15m

•Dolostone: grey-yellowish, locally vuggy.

•Bed K7/25-2 Interval 32.25-32.40m [0.15-0.30] Thickness 0.15m

•Dolomarl: grey, fissile.

•Bed K7/25-3 Interval 32.40-32.80m [0.30-0.70] Thickness 0.40m

•Dolostone: bright yellow, probably sandy, with fine wavy lamination, locally vuggy and fractured.

•Bed K7/25-4 Interval 32.80-33.00m [0.70-0.90] Thickness 0.20m

•Hard recessive yellowish grey dolostone with faint way lamination and no fossils.

•Bed K7/25-5 Interval 33.00-33.30m [0.90-1.20] Thickness 0.30m

•Shale: dark grey, crumbly.

•Bed K7/25-6 Interval 33.30-33.70m [1.20-1.60] Thickness 0.40m

•Shale: dark buff, sandy, fissile and laminated with ferruginous Liesegang rings.

•Bed K7/25-7 Interval 33.70-34.60m [1.60-2.50] Thickness 0.90m

•Sandstone: buff, poorly lithified, with grey argillaceous seams." (Nurgaliev et al. 2015)