Rochdale overcame a two-goal deficit to gain a draw in a spectacular second 45.
After a dull first half, half-time substitute Lee McEvilly gave Wrexham the lead on 47 minutes, beating Matt Gilks after Chris Llewellyn's set-up.
Gilks parried a McEvilly drive into the path of Llewellyn, who controlled an awkward ball to make it 2-0.
But Wrexham keeper Mike Ingham missed a cross, giving Glenn Murray an easy header, and slack defending at a corner let John Doolan head the equaliser.
Rochdale: Gilks, Ramsden, Stanton, McArdle, Goodall, Doolan, Jones, Warburton (Thompson 57), Dagnall, Murray, Moyo-Modise (Mocquet 57).
Subs Not Used: Rigby, Crooks, Brown.
Goals: Murray 63, Doolan 78.
Wrexham: Ingham, Roche, Pejic, Mike Williams, Valentine, Johnson (Crowell 85), Ferguson, Danny Williams, Done, Llewellyn, Marc Williams (McEvilly 46).
Subs Not Used: Michael Jones, Spender, Gareth Evans.
Booked: Roche.
Goals: McEvilly 48, Llewellyn 55.
Att: 2,837
Ref: J Moss (West Yorkshire).