51009
Despite the fact that this semiprecious gemstone is classified as “ stone ” , wood anatomy reveals it was fossilized pieces of trunks of Araucariacea .
 Araucariacea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Araucariacea