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The Equisetales included the common giant form " Calamites " , with a trunk diameter of 30 to and a height of up to .
 Equisetales, Calamites
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Equisetales, Calamites