110082
This idea challenges the canonical natural selection models based on the gradualism of the mutation-adaptation pattern , providing more support to the punctuated equilibrium theory proposed by Stephen Jay Gould and Niles Eldredge .
 Stephen Jay Gould, Niles Eldredge
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:
 Stephen Jay Gould, Niles Eldredge