petrified wood chadron nebraska

[val horn]

i was out hunting white river fossils on a paid ranch near chadron nebraska.  found an area with occasional typical mammal and turtle fossils but also large amounts of these layered agatized rocks that I hope are petrified wood.  also found were occasional yellow brown translucent "melted wax" pieces that I was told was derived from sap.  I thought this is great and brought enough home and now I wonder is it petrified wood or if it purely geological.  Please take a look and tell me what you see.   there are other areas of badlands within her ranch that have clearly agatized mammal bones, and other areas with purely geological layers of agate and crystal.