Hello! This is my first post/plea for ID help.
This piece was found in the Summerville Formation in Little Egypt area outside of Hanksville, UT in the Henry Mountains (I believe Summerville Formation is middle to late Jurassic). You can see very colorful agatized portions showing through in a few places. Little Egypt is known for petrified wood (cycads, in particular), dinosaur fossils & coprolite, but there is so much misidentification of fossils in this area, so.....
Thank you in advance for any help you can provide!