I found this massive shelf fungus on one of my trees out back. It is about the size of both of my hands cupped together. iNaturalist has trouble with fungi, which is understandable since so many look so similar and to properly identify one a naturalist must do additional tests. I will not be taking this fungus through tests as I am not a trained fungi expert, but I will share the intriguing photo. If you want a laugh, Google “shelf fungi on post oak tree” and check out some of the suggested names in “About the image” for the fungus in the photos. Google images also has an abysmal time matching fungi.