The results of bio-and magnetostratigraphic investigations in the uppermost part of Upper Berriasian "Zavodskaya Balka" section (Feodosiya, Crimea) are presented. For the first time the representatives of Riasanites genus (Ammonoidea) have been found in this section. By biostratigraphic correlation, based on ammonites, the studied section is an age analogue of boissieri zone (crassicostatum subzone). Th e stratigraphic distribution of foraminifers, ostracods and dinocysts have been studied. By biostratigraphic correlation, based on foraminifers and dinocysts, the studied section is an age analogue to upper Berriasian - lower Valanginian of standard Tethyan scale. The palaeomagnetic column presents an alternating polarity. The magnetic chrons analogous to the M15 and M14 are identified in it. By magnetostratigraphic correlation, the section studied is an age analogue of the Berriasian-Valnginian boundary (otopeta subzone and pertransiens zone). The existence of the M16n.lr subchron ("Feodosiya") is confirmed.