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
80	550	B	LOWER PALEOCENE		456.0	468.8	MISSING HOLE OR DRILLED INTERVAL	NO AGE GIVEN		NO AGE GIVEN	   60	   65	 62.5	DSDP INITIAL REPORTS
80	550	B	UPPER MAESTRICHTIAN 		468.8	551.0		NO AGE GIVEN		NO AGE GIVEN	   65	 67.5	66.25	DSDP INITIAL REPORTS
80	550	B	LOWER MAESTRICHTIAN 		551.0	560.5		NO AGE GIVEN		NO AGE GIVEN	 67.5	   70	68.75	DSDP INITIAL REPORTS
80	550	B	LOWER MAESTRICHTIAN 	CAMPANIAN	560.5	575.7		NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	 67.5	   78	72.75	DSDP INITIAL REPORTS
80	550	B	SANTONIAN	CONIACIAN	579.5	594.4		NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	   78	   86	   82	DSDP INITIAL REPORTS
80	550	B	MIDDLE CENOMANIAN		594.4	635.0		NO AGE GIVEN		NO AGE GIVEN	   95	 97.5	96.25	DSDP INITIAL REPORTS
80	550	B	MIDDLE CENOMANIAN	LOWER CENOMANIAN	635.0	644.0		NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	   95	  100	 97.5	DSDP INITIAL REPORTS
80	550	B	LOWER CENOMANIAN		644.0	653.0		NO AGE GIVEN		NO AGE GIVEN	 97.5	  100	98.75	DSDP INITIAL REPORTS
80	550	B	LOWER CENOMANIAN	UPPER ALBIAN	653.0	671.0		NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	 97.5	  104	100.8	DSDP INITIAL REPORTS
80	550	B	UPPER ALBIAN		671.0	689.0		NO AGE GIVEN		NO AGE GIVEN	  100	  104	  102	DSDP INITIAL REPORTS