Decades: 1120s 1130s 1140s 1150s 1160s - 1170s - 1180s 1190s 1200s 1210s 1220s
Years: 1171 1172 1173 1174 1175 - 1176 - 1177 1178 1179 1180 1181
Births
Deaths
... coniferous. The Ayan spruce[?] (Abies ayanensis), the Sakhalin fir[?] (Abies sachalensis) and the Daurian larch[?] are the chief trees; on the upper parts of the ...