Take ten minutes and watch this video clip of "Prehistoric Beast," a 1984 homemade stop-motion short film from FX dynamo Phil Tippet and one of my favorite dinosaur-related things EVER. As you watch it, keep in mind that '84 means this was done the old-fashioned way - frame-by-frame with NO computer effects... even those "hand-held camera" shots are artificially executed bit by bit.
I first encountered the short as incorporated into "Dinosaur!", a 1985 "everything you wanted to know" documentary hosted by Christopher Reeve that I probably watched multiple times a WEEK as a child. I was obsessed with this thing, and as a science doc it still holds up today: