E120 CREW LANDED AT DFW WITHOUT LNDG CLRNC.

Narrative

REGIONAL APCH CLRED US FOR VISUAL APCH TO RWY 36L AT DFW; FOLLOWING AN MD80 5 MI AHEAD. PF ENCOUNTERED WAKE TURB; SO HE BEGAN FLYING 1 DOT ABOVE GS. I WAS MONITORING HIS APCH. THE FREQ WAS VERY BUSY AND CONGESTED. APCH CTL APPARENTLY FORGOT TO TELL US TO GO TO TWR; AND I (PNF) FAILED TO CATCH THAT. WE LANDED WITHOUT LNDG CLRNC. I DID NOT EVEN REALIZE WE WERE STILL ON APCH UNTIL WE EXITED THE RWY. AT THAT TIME; APCH CTLR TOLD US TO CONTACT TWR. THE CAPT TELEPHONED THE TWR MGR ONCE WE ARRIVED AT THE GATE AND SMOOTHED EVERYTHING OUT. IT IS POSSIBLE THE TWR CLRED US TO LAND EVEN THOUGH WE WERE NOT ON THE FREQ AND DID NOT HEAR IT. CONTRIBUTING FACTOR WAS THAT THIS WAS OUR 4TH LEG OF THE DAY WITHOUT ANY BREAKS BTWN THE LEGS. WE HEAR LNDG CLRNCS SO MANY TIMES EACH DAY; SOMETIMES IT IS HARD TO REMEMBER IF WE HEARD IT FOR THIS PARTICULAR LNDG. IN ADDITION; ONE OF OUR CHKLIST ITEMS IS TO VERIFY LNDG CLRNC WAS RECEIVED. ALTHOUGH I READ THIS CHKLIST ITEM ALOUD; I KNOW I WAS NOT CONCENTRATING. THE PROB WAS CAUSED BY MY LACK OF ATTN AND FAILURE TO VERIFY ITEMS ACCURATELY ON MY CHKLIST.