The photos are kind of blurry but this is a good possibility. Very common on pecan and can look similar to Phellinus as well as Ganoderma. More closeup photos can help confirm this ID.
Peter Joseph
2018-04-00
2018/04/27 10:57 PM CDT
United States of America, Texas, Medina River Natural Area, TX-16, San Antonio, TX 78264, USA