This seems a likely candidate because:
The pores are tiny and very close together, about 7 - 10 per mm. only just visible in the image
the crust is relatively thin, with pores probably less than 2 mm deep
The pores can be found very close to the edge of the hymenium
A very pale colour, only just lightly browning with age
The margins are turning up - just - in this case
So if you didn't look closely, this specimen could perhaps be confused on first view with either Byssomerulius corium or even Stereum rameale?
The correct name could perhaps be Skeletocutis semipileata or nemoralis, depending on which author you follow!