I've been asked to verify the authenticity of the following two Ganesha gayatri mantras.  I.e. if they are not a modern creation. I haven't found them in either Muktabodha or GRETIL libraries.  Would any of the list members know a scriptural source or have heard these in a temple ceremony?

 ekadantāya vidmahe

vakratuṇḍāya dhīmahi

tanno buddhiḥ pracodayāt

gajānanāya vidmahe

vakratuṇḍāya dhīmahi

tanno dantī pracodayāt

Thanks,

Harry Spier