• "[Lower Kazanian Substage - Baitugan Beds - Lingula Shale Member]

•Package S7/4 Interval 21.0 - 40.0m Thickness 19.0m

•Grey, thinly bedded limestones and marls with interbeds of greenish-grey shales. The lower part of the bed is composed of bioclastic limestones containing small foraminifers, ostracods, and also the mass accumulations of distorted shells of the brachiopod Cancrinella cancrini. Along with Cancrinella, the rock contains the more rarely occurring brachiopod Licharewia rugulata, fragments of branched and reticulate bryozoans, crinoids, and the conodont Kamagnathus khalimbadzhae. The base of the bioclastic limestone bed have the feeding burrows (10–15 mm in diameter) branched in the horizontal plane and filled with shell debris. The upper part of the bed contains thin alternations (0.1–0.2 m) of limestones, marls, and shales with well-developed platy structures. The rock contains foraminifers, rare marine bivalves, brachiopods, and ostracods. Some beds contain numerous remains of plants.

•[Kamyshla Beds]

•Package S7/5 Interval 40.0-52.0m Thickness 12.0m

•Greenish-grey, polymict, obliquely bedded, calcareous sandstone with pebbles of argillaceous rock. The sandstone contains the imprints of plants and silicified tree trunks.

•The overlying beds are accessible in outcrop S6." (Nurgaliev et al. 2015)