Unknown bracket - mazegill?

Unknown bracket - mazegill?

Observation - Unknown bracket - mazegill?. Description: A bit of a long shot as this is a photo I have come across whilst looking for some others. I don't have a shot of the underside, but it is visible at the edge and looks fairly distinctive. I'm sure I've seen something like this before but can't remember w

A bit of a long shot as this is a photo I have come across whilst looking for some others. I don't have a shot of the underside, but it is visible at the edge and looks fairly distinctive. I'm sure I've seen something like this before but can't remember what, possibly an Inonotus sp or Mazegill sp?