39991
Fossils of Xixiasaurus were discovered in central China , in the Majiacun Formation of Henan , and are believed to have been from the Late Cretaceous ( Coniacian - Campanian age , about 83 Ma ago ) .
 China, Henan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 China, Henan