leg site hole age mnemonic auxiliary age mnemonic top of section depth(m) bottom of section depth(m) special condition age auxiliary age averaged age age top of section(million years) age bottom of section(million years) average age(million years)t data source 17 166 PLIOCENE 1.0 6.3 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 17 166 UPPER MIOCENE 6.3 20.0 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 17 166 MIDDLE MIOCENE 20.0 56.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 17 166 LOWER MIOCENE 65.0 93.0 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 17 166 UPPER OLIGOCENE 103.0 130.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 17 166 LOWER OLIGOCENE 140.0 149.0 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 17 166 UPPER EOCENE 159.0 178.0 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 17 166 MIDDLE EOCENE 178.0 202.0 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 17 166 CENOMANIAN ALBIAN 221.0 279.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 108 100 DSDP INITIAL REPORTS 17 166 HAUTERIVIAN 289.0 307.0 NO AGE GIVEN NO AGE GIVEN 121 126 123.5 DSDP INITIAL REPORTS