Descriptions of all the various VFX methods?

This film pioneered several different visual effects techniques. Can anybody point me to a good description of how each and every one of them worked?

I know at that time there wasn't really any such process as we now know as "compositing", so the effects were done either "in camera" or using a modified "contact printing" process. But which was used on which scenes?

Some scenes (often essentially just a "split screen") used a "fixed matte", while other scenes used a "traveling matte" (possibly the "Williams process"?). But again, which was used on which scenes? Also, the dividing line for some of the "split screen" scenes is quite ragged -certainly not anything like a "straight" line; how was the matte created?

It looks like once in a while a full-sized set and its corresponding model were synchronized very closely, so the camera could believably flip back and forth between them. How was this done?

I noted one probable error: when Malone is crouching back and forth, peeking over the bank at the dinosaurs, at one point his head disappears briefly (it got too high and so crossed the matte line into the "other" half the scene). Are there other probable errors I missed?

Some of these techniques were seemingly just as labor-intensive as the stop-motion animation itself. Did they expand either the budget or the time needed to produce the film?

The believability of the dinosaur scenes came not only from the high level of skill with stop-motion animation but also from the very high quality models. Does anybody know of any pictures or drawings of the armatures/skeletons inside? Was this the artist Marcel Delgado's first film? And what other films did he work on?