ORYOL REGION

SOUTHWEST OF THE LIVNY TOWN

GORNOSTAYEVKA QUARRY

?TRIAGULARIS-CREPIDA ZONE OF THE STANDARD CODONT SCALE

ZADONSKIAN REGIONAL STAGE

LOWER FAMENNIAN STAGE

UPPER LATE DEVONIAN EPOCH

LATE DEVONIAN

STEM: TETRAPODA GOODRICH, 1930