Large shelf mushroom. Flesh thick and fleshy to rubbery. Pores on the underside tiny. Younger specimens’ pores bruise brown over a few seconds.
Although the smaller specimen photo looks superficially like Polyporus squamosus (Dryad’s Saddle) it is certainly not. Flesh doesn’t match, pores are of the wrong size, and it does not have the characteristic “watermelon” smell.
Try as I might, I could not get a single spore off of it.