When the fossilized bone was treated over several weeks to remove mineral content from the fossilized bone-marrow cavity ( a process called demineralization ), Schweitzer found evidence of intact structures such as blood vessels, bone matrix, and connective tissue ( bone fibers ).
12.
When the fossilized bone was treated over several weeks to remove mineral content from the fossilized bone marrow cavity ( a process called demineralization ), Schweitzer found evidence of intact structures such as blood vessels, bone matrix, and connective tissue ( bone fibers ).
