Is this oyster mushroom?

Is this oyster mushroom?

Observation - Is this oyster mushroom?. Description: Found on fallen tree in a wood dominated by beech trees, the largest of the fruit bodies is about 8 inches across. There is no noticeable stipe, but the gills run right down to the base of the fruit bodies. No discernible smell. My best guess is Oyster mu

Found on fallen tree in a wood dominated by beech trees, the largest of the fruit bodies is about 8 inches across. There is no noticeable stipe, but the gills run right down to the base of the fruit bodies. No discernible smell. My best guess is Oyster mushroom - but which variety?