Here, in The Lost World (1960), they apparently used a young alligator...
And some other reptile here...
Note the two people off to the left in this "split shot" below.
Actually, what you saw in lots of old sci-fi films were iguanas or other contemporary reptiles with plastic prosthetics scotch-taped to their backs, heh-heh!
And the vegetation in that image doesn't look very authentic. There were, after all, no grasses (or other angiosperms) in the Permian Period.
Regards,
From Wikipedia...
Terrestrial life in the Permian included diverse plants, fungi, arthropods, and various types of tetrapods.
The period saw a massive desert covering the interior of Pangaea. The warm zone spread in the northern hemisphere, where extensive dry desert appeared.[18] The rocks formed at that time were stained red by iron oxides, the result of intense heating by the sun of a surface devoid of vegetation cover.
A number of older types of plants and animals died out or became marginal elements.
The Permian began with the Carboniferous flora still flourishing.
About the middle of the Permian a major transition in vegetation began. The swamp-loving lycopod trees of the Carboniferous, such as Lepidodendron and Sigillaria, were progressively replaced in the continental interior by the more advanced seed ferns and early conifers.
At the close of the Permian, lycopod and equisete swamps reminiscent of Carboniferous flora survived only on a series of equatorial islands in the Paleotethys Sea that later would become South China.[19]
The Permian saw the radiation of many important conifer groups, including the ancestors of many present-day families. Rich forests were present in many areas, with a diverse mix of plant groups. The southern continent saw extensive seed fern forests of the Glossopteris flora.
Oxygen levels were probably high there. The ginkgos and cycads also appeared during this period.
Actually, what you saw in lots of old sci-fi films were iguanas or other contemporary reptiles with plastic prosthetics scotch-taped to their backs, heh-heh!
Thanks, but I knew they used live lizards with miniature trees, landforms and such as backdrops to make them appear huge.
In fact, I can think of at least two episodes from the 1960s TV Sci-Fi series Lost In Space where they used a live lizard with a Dimetrodon-like ‘ribbed sail’ attached to its back. Lol!
And in the 1960s film The Lost World, among many other films of the time.
But my point was that Dimetrodon was often the creature they were trying to depict in these old films, inaccurately as a dinosaur, when, as the article posted here points out, it, and others of the period, weren’t, dinosaurs not having emerged until millions of years later.
They also used animation, puppets, and/or “go-motion”, whatever exactly that is, in some of these old dinosaur and big monster films.
Here, in The Lost World (1960), they apparently used a young alligator...
And some other reptile here...
Note the two people off to the left in this "split shot" below.