I recently watched the pretty cool 1955 Czech kids film A Journey to the Beginning of Time, which used what were primo special effects for that era to teach children about geology and science. Basically, a group of kids start an adventure on a boat where they sail back through the different eons of world history, looking at the different animals. Of course this means dinosaurs, but it also means other animals too. Of course by 2021 standards, the special effects aren’t great, but that’s by no means a fair comparison. It actually works pretty well. This version is dubbed into English. I hate dubbing, but it doesn’t really matter I guess.