7564
This group of decapods is a good example of a living fossil , or a lazarus taxon , since until their discovery in the 1970 s , the group was considered to have become extinct in the Eocene .
 location: Eocene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Eocene