Lets go over this from the beginning the author stated:
Scientists were investigating organic chemicals trapped in an Italian sedimentary rock formation when they found evidence that an extinct fungus feasted on dead wood during a time when the worlds forests had been catastrophically eradicated.1 What could have caused such a universal effect on forests, and why does organic material remain in rocks that are supposedly 251.4 million years old?"2
The article he cited did not stated :
By analysing the carbon and nitrogen content of the fossilized remains of the microscopic organisms,
By omitting the fact that these were fossilized the author is being designious by implying that these finding were not in fact fossilized
If you want to rewrite the article, do so and send it in. Then it will have the exact words you think it should have.
In the mean time you might examine the broader meaning of the word “fossil”. (and “designious” too)
No Mr. Thomas is deliberately misstating the article to give a false impression.
Now you can try to dance around that and change the subject or try to redefine words but that will not change the facts.