I have been trying to identify a Japanese cartoon series that I used to watch in the 90s. It was about a group of friends who get transported into an alternative universe where dinosaurs still exist and are used by a pre-industrial society as beasts of burden.
The friends must travel to a far-away location where a portal is located that can take them back to our universe.
I recall that this cartoon was aired on Italian television before 1998, it was dubbed in Italian. I recall that the characters in the movie had to traverse an entire country to reach their destination, and that technology was banned in this alternative universe because the religion of this quasi-feudal society forbade it.