Ash Tree Petrified Wood Slab (with stand) 3f1f15f4580652d9bc1116b9e76f27b7 "Pycnodontiformes" are an extinct order

"Pycnodontiformes" are an extinct order of bony fish

A massive glacier that moved across what is now Minnesota some 10-15

which used their caves mainly for hibernation

It's not uncommon to find the fossilized skeletal remains of several cave bear families from different time periods in the same cave

Ash Tree Petrified Wood Slab (with stand) 3f1f15f4580652d9bc1116b9e76f27b7 "Pycnodontiformes" are an extinct orderFrom ancient Greek meaning "wood turned into rock", Petrified Wood is an unique form of fossilization. In some instances all the organic matter has been replaced by minerals (usually a silicate, such as quartz) during a process called permineralization replacement. However, many petrified wood specimens undergo a unique fossilization process, where silicates bond with the cellulose structure of the wood, thereby preserving organic matter. Regardless