The popularity of Edmontonia is rooted mostly in its representation in the fossil record. Some very popular and well known dinosaurs have not been well represented in the fossil record, so we can certainly say that it is possible to be poorly represented but very well known. Edmontonia is one of those dinosaurs that is both well known and well represented. Due to this popularity it appears in video games, card games, documentaries (announced simply as "an ankylosaur" in the linked video), cartoons, books (too many to list), and almost any other medium one can think about. I like to share, when they are available, these images from information cards on dinosaurs because they re the kind of things that I used to love when I was a kid and really got me into dinosaurs (of course I am a huge nerd though). These summarize some of the things we know about Edmontonia at the same time as making the animal appear dynamic and interesting to people that would consider themselves dinosaur enthusiasts. They serve the purpose of a popular culture outlet in that way exceedingly well, and are therefore an important resource for popularity day here.