Don,

Florissant Fossil Beds http://www.nps.gov/flfo/index.htm is a neat place I always meant to visit.  What is most important about the site is the presence of many insect and spider fossils that are usually not preserved in the rocks there.  

  This is the Big Stump.  The most common kind of "petrified stump" found at Florissant Fossil Beds is the redwood Sequoia, such as "Big Stump" pictured at left. When you visit the park, look for two saw blades embedded into Big Stump; before Florissant was a National Monument, someone tried to cut Big Stump into pieces by using saws! Needless to say, the effort was for the most part, fruitless, and the saw blades are still stuck in Big Stump to this day!

Trio

 This is a fossil set called the Trio.  This "family circle" of fossilized stumps grew out of the single trunk of an older parent tree. The tree trunks are ancient clones, or genetically identical copes, of that parent tree.  Modern coastal redwoods also reproduce by stump sprouting. If a redwood is toppled or burned, a ring of new trees often sprouts from burls (roots that stick out of the ground) around the trunk's base. In the coastal redwood forests, family groups are common. But this trio of stone stumps is unique in the world's fossil record!

http://www.nps.gov/archive/flfo/online_museum/rocks-fossils/paleontology/plants/woods/conifers/trio/index.html

Ed Frank