Daikyouryuu Jidai (The Age of the Great Dinosaurs)
Fansub credits can be found in the link above.
This is an original TV special created entirely by Shotaro Ishinomori, telling the story of three kids who are taken by a flying saucer that sends them back in time to the dinosaur age in order to...learn about empathy? Yeah, just your typical anime plot 🦛
I had discovered this anime for the first time years ago when I was looking through info for the anime's soundtrack release—I couldn't find any JP raws online nor could I find evidence that this was ever released on DVD, so I was under the impression this never got a home media release at all. (EDIT: actually, as of me writing this out, I've just discovered that there was a Betamax release of all things...)
Fast forward to several months ago. I discover a high-quality clip of the anime uploaded onto YT by a Korean user, with the keywords "DVDrip" in the title!! I searched once more for evidence of a DVD release but once again I could not find anything. The Korean user in question was also being a gatekeeping dick and didn't want to tell anyone where the DVD was sourced from.
To make a long story short, I found out from various people that the special was included in a Shotaro Ishinomori anniversary compilation DVD—not once, but twice! And so I purchased the DVD to get it ripped & subbed eventually...and here we are.
I'll be blunt, I didn't like this anime lol. BUT, I do think it's worth at least one watch. Not something you should avoid or anything.