Something different on Beech

[Tallgrass]

Not fantatic photos here but I found these two small brackets about 50cm up on a mature beech. At first I thought it was an old oyster but it didn't have gills underneath.

 

It was leathery and only about 10cm across each. It almost feels like a frond of dried grifola or meripilus with that fibrous texture, and it has dried well, cocoa brown with white fibres inside - but I am sure its neither of these and Philips doesn't know thus far either.

 

As you can see on pix there is a slight cavity so there may be a small area of dead wood.

 

Any ideas?

 

Thanks

 

Leonie