First appearance of a Pokemon egg.
Ash and his friends encounter Gary again.
There are two Indiana Jones references in this episode; Gary's digging clothes are very similar to the titular character's clothes, and when Ash is attempting to put out the fuse lit by Team Rocket, they roll into a boulder, similar to Raiders of the Lost Ark (1981)
The point where Meowth actually lights the fuse is cut in Kids' WB! version of the dub. Instead, the camera zooms in to Meowth's face so the lighter isn't seen. This scene is uncut on the home video and streaming versions, as well as in the foreign dubs.
American Title: "Attack of the Prehistoric Pokemon".