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Pulsations in pre-main sequence stars have been discovered several timeswithin the last years. But nearly all of these pulsators are of deltaScuti-type. gamma Doradus-type pulsation in young stars has been predicted bytheory, but lack observational evidence. We present the investigation ofvariability caused by rotation and (gammaDoradus-type) pulsation in twopre-main sequence members of the young open cluster NGC2264 usinghigh-precision time series photometry from the CoRoT satellite and dedicatedhigh-resolution spectroscopy. Time series photometry of NGC2264VAS20 and NGC2264VAS87 was obtained by the CoRoT satellite during the dedicated short runSRa01 in March 2008. NGC2264VAS87 was re-observed by CoRoT during the short runSRa05 in December 2011 and January 2012. Frequency analysis was conducted usingPeriod04 and SigSpec. The spectral analysis was performed using equivalentwidths and spectral synthesis. The frequency analysis yielded 10 and 14intrinsic frequencies for NGC2264VAS20 and NGC2264VAS 87, respectively, in therange from 0 to 1.5c/d which are attributed to be caused by a combination ofrotation and pulsation. The effective temperatures were derived to be6380$\pm$150K for NGC2264VAS20 and 6220$\pm$150K for NGC2264VAS87. Membershipof the two stars to the cluster is confirmed independently using X-ray fluxes,radial velocity measurements and proper motions available in the literature.The derived Li abundances of log n(Li)=3.34 and 3.54 for NGC2264VAS20 andNGC2264VAS87, respectively, are in agreement with the Li abundance for otherstars in NGC2264 of similar Teff reported in the literature. We conclude thatthe two objects are members of NGC2264 and therefore are in their pre-mainsequence evolutionary stage. Assuming that part of their variability is causedby pulsation, these two stars might be the first pre-main sequence gammaDoradus candidates.

gamma Doradus pulsation in two pre-main sequence stars discovered by CoRoT