QPR have decided to appeal to the Football Association against the red card Joey Barton received against Norwich at Loftus Road.
Barton had given Rangers an early lead on Monday before then getting involved in a tussle with Bradley Johnson, and appearing to headbutt the Norwich midfielder.
Initially play continued, before referee Neil Swarbrick consulted his assistant nearest to the incident and then produced a red card.
QPR said in a statement on their official website: "QPR have formally lodged an appeal to the Football Association following Joey Barton's sending off against Norwich City on Monday 2nd January."
QPR must now present supporting evidence ahead of an independent disciplinary hearing, which will convene and make a decision ahead of the weekend's FA Cup third-round tie at MK Dons.
Television footage from the game initially proved inconclusive, with no real close-ups because of the position of cameras at the stadium.
What was clear from the long-range pictures was that Barton clashed with Norwich defender Zak Whitbread and then Johnson in the centre circle, ahead of directly squaring up to the Canaries midfielder.
Warnock branded Johnson a "disgrace" for his reaction, while Barton immediately took to Twitter to launch an impassioned defence of what he viewed as a "ridiculous decision", claiming the officials had been "conned".
It is understood that the FA have decided the post-match comments from manager Warnock do not warrant any further action, but they will be seeking observations from QPR over comments from director Ruben Emir Gnanalingam.
Norwich went on to win Monday's game through goals from Anthony Pilkington and Steve Morison, to leave QPR just above the relegation zone.