79950
The fossil records of boobies are not as well documented as those of the gannets ; possibly because the species of boobies were less numerous in the late Miocene to Pliocene , when gannets had their highest diversity or because of the more tropical distribution of boobies , many fossil species have simply not been found yet , as most localities are in continental North America or Europe .
 North America, Europe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 North America, Europe