Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
Your specimen is basically a fossilized section of ocean floor with an accumulation of marine fossils.
I'm seeing crinoid stem sections and what I believe might be the front lip of a trilobite or possibly the edge of a brachiopod shell