I’ve been searching for a long time now and I am not able to find the right cartoon. I remember a SciFi cartoon series where a bunch of humans travel with their spaceship and find a planet where dinosaurs are still alive.
I found Dino Adventure Jurassic Tripper so far and I'm pretty sure that it was a spaceship and not a normal ship. Also I think it is more realistically drawn.
Edit: Long time is about 20 years ago and I found in on a special German tv channel. It was in German, but it wasn't a German show. It looked like a series from the 80s or 90s. As SQB suggested it is not Dino-Riders and it was a more subtle approach - so it was not over the top with armored dinosaurs or something. Just a few humans "stranded" in a tropical enviroment discovering dinosaurs and defending themselves against the threat of being eaten.