6915
The site was in shallow waters of a continental shelf : the continental craton of Laurentia lay to the west , beyond the lagoon system that formed behind the protective reef .
 location: Laurentia
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: Laurentia