In the northern part of the outcrop loose sandy material contains rich accumulations of charophyte gyrogonites
, previously tentatively identified as belonging to the genus Trochiliscus (Savvaitova 1977).
Fossil representatives of the Charales (though not entirely the equivalent of modern genera such as Chara and Nitella) have great antiquity in the fossil record, as exemplified by finds of "gyrogonites
" (fossil oogonia); such structures are known from the early Devonian (cf.
Two different microfacies were recognized: a) packstone with abundant angular quartz grains, gyrogonites
of charophytes, small miliolids, fragments of bivalves, bryozoans, echinoderms, gastropods (Fig.