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 32 304 UPPER MIOCENE 105.5 225.5 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 32 304 UPPER ALBIAN 235.0 244.0 NO AGE GIVEN NO AGE GIVEN 100 104 102 DSDP INITIAL REPORTS 32 304 APTIAN 244.0 253.0 NO AGE GIVEN NO AGE GIVEN 108 110 109 DSDP INITIAL REPORTS 32 304 APTIAN BARREMIAN 253.0 281.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 108 121 114.5 DSDP INITIAL REPORTS 32 304 BARREMIAN VALANGINIAN 281.0 299.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 115 131 123 DSDP INITIAL REPORTS 32 304 LOWER CRETACEOUS 318.0 327.0 NO AGE GIVEN NO AGE GIVEN 100 135 117.5 DSDP INITIAL REPORTS 32 304 HAUTERIVIAN VALANGINIAN 327.0 331.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 121 131 126 DSDP INITIAL REPORTS 32 304 BARREMIAN VALANGINIAN 331.0 334.5 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 115 131 123 DSDP INITIAL REPORTS 32 304 LOWER CRETACEOUS 334.5 337.5 NO AGE GIVEN NO AGE GIVEN 100 135 117.5 DSDP INITIAL REPORTS