Bolton Wanderers had victory snatched away from them at Oakwell after battling their way back into contest.
The hosts had taken the lead in the first half through Gary Gardner but two goals in the second period in the space of three minutes from Adam Le Fondre and Craig Noone had seemingly swung the contest in favour of the visitors.
But Oliver McBurnie’s injury time header ensured the points were shared.
Phil Parkinson made four changes to the side that lost to Millwall in midweek as Wanderers aimed to arrest their four-game losing streak against a Barnsley side that sat just one place and two points below them in the Sky Bet Championship. Filipe Morais returned at the expense of Craig Noone, while wing backs Antonee Robinson and Mark Little came on for Andrew Taylor and Jon Flanagan, while Reece Burke came in for Derik.
Backed by just under 3,000 travelling fans, Wanderers started the brighter of the two and enjoyed far more possession than their hosts during the early stages.
Playing in a 3-4-3 formation, the visitors seemed set on attacking from the off with Barnsley’s sole outlet up front coming in the guise of Kieffer Moore.
Brad Potts registered the game’s first effort in target after Barnsley were afforded some time and space just outside the Wanderers box. The midfielder’s effort, though, lacked the power to trouble Ben Alnwick.
The chance saw the hosts get back into the game and they opened the scoring through Gary Gardner who rifled the ball into the roof of the net after Wanderers had cleared off their own line through Wheater and Beevers in the run up to the goal.
Adam Davies came to the rescue for Barnsley as he kept out a Sammy Ameobi right footer as Wanderers pressed for an equaliser.
At the other end, Wanderers struggle to clear a corner and McBurnie was allowed a run on goal only to see his curling effort sail narrowly wide of Alnwick’s left hand post.
Wanderers tried to rally as the half drew to a close and Henry saw a volley deflect for a corner.
Will Buckley came on for Reece Burke during the break as Parkinson made an attacking change to try and get Wanderers back into the contest.
Wanderers attacked from the off and Buckley’s right sided cross found its way to Robinson whose shot went narrowly wide.
The hosts survived a vociferous claim for a penalty after a Tykes defender appeared to handle Le Fondre’s shot. From the resulting corner Wheater saw a towering header cleared off the line by Reds’ captain Andy Yiadom.
Wheater had another shot charged down at the expense of a corner as Wanderers tried in vain to get a goal.
Barnsley should have made it two when Moore rose high above everyone else to get his head on Hammill’s right sided cross but the big striker headed over much to the relief of Alnwick.
Parkinson immediately made another attacking change with Craig Noone coming on for Little for the remaining 20 minutes.
But Barnsley still had ambitions of their own to score as Moncur broke forward and charged towards goal but Alnwick kept out the midfielder’s strike and McBurnie’s rebound was cleared.
At the other end Le Fondre went on a powerful run only to see his goalbound effort deflect for a goalkick.
Wanderers got themselves back into the contest in dramatic fashion after Le Fondre picked himself up to score from the spot. There had been a delay in the penalty being taken after referee Mike Jones had to deal with an off-the-ball incident involving Pratley and McBurnie, both of whom were shown a yellow card.
And just moments later substitute Noone put Wanderers in front to spark wild scenes of celebration amongst the passionate Wanderers faithful.
Ameobi caused mayhem over on the right and the ball broke to Noon who crashed home with his right foot to register his first goal in a Wanderers shirt.
Barnsley weren’t deterred and grabbed an injury time equaliser through McBurnie who head home a corner to ensure both sides took home a point.