go the way of the dinosaurs vs go the way of the dodo

go the way of the dinosaurs

verb
  • To go extinct or become obsolete; to fall out of common use or practice; to become a thing of the past. 

go the way of the dodo

verb
  • To go extinct or become obsolete; to fall out of common practice or use; to become a thing of the past. 

How often have the words go the way of the dinosaurs and go the way of the dodo occurred in a corpus of books? (source: Google Ngram Viewer )