I was just watching a trailer for the new Jurassic movie and was thinking to myself that the special effects industry really has grown since the old Godzilla movies. But I'm sure at the time that it was a good special effects. It got me wondering about times earlier than that. Which leads to my question, What is the first movie/show that introduced dinosaurs as a "real" creature? As in, not a cartoon, but ones interacting with a set. I think it would be fun to watch and compare.
The first movie dinosaur was a cartoon, Gertie the Dinosaur, in 1914.
Wikipedia's list of Dinosaur Movies includes the following with actual physical models, costumes, props, lizards wearing dinosaur makeup, etc. of dinosaurs that are earlier than in previous answers:
The list is in reverse chronological order.
17) 1956 The Beast of Hollow Mountain.
16) 1955 Godzilla Raids Again.
15 1955 King Dinosaur.
14) 1955 Journey to the Beginning of Time.
13) 1954 Godzilla.
12) 1953 The Beast from 20,000 Fathoms.
11) 1951 Lost Continent.
10) 1950 Two Lost Worlds.
9) 1948 Unknown Island.
8) 1940 One Million B.C..
7) 1933 The Son of Kong.
6) 1933 King Kong.
5) 1925 The Lost World.
4) 1923 Three Ages.
3) 1918 The Ghost of Slumber Mountain.
1) 1914 Brute Force.
The Last Dinosaur was a 1977 film about the present-day discovery of an isolated valley where a few dinosaurs still live. The film features a Tyrannosaurus Rex, a Triceratops, a third creature which isn't actually a dinosaur, and Richard Boone as Maston Thrust, a wealthy industrialist and big game hunter.
The film was a joint production of Rankin/Bass and Tsuburaya Productions, the Japanese company that produced shows like Ultraman. The dinosaur scenes were filmed using the "man in suit" method, like the Godzilla films of the time. A man-sized Dinosaur prop, with a man inside providing movement, was filmed on a scale model set.
The movie was apparently intended as a theatrical release, but it eventually ran as a TV movie on the USA network.
The trailer is on youtube:
Searching for the movie title will turn up other clips.