Zikten posted... It was originally going to be Dinosaurs Attack!
But right when they were going to do it Jurassic Park came out, so the studio switched to Martians. As a kid i never knew Dinosaurs Attack! Was a thing but they were apparently a series of trading cards in the 50s I think. But Mars Attacks also had cards. Each card showed gruesome art of Dinosaurs or Martians killing people. I remember seeing a card where a pack of flying Dinosaurs tear a person into pieces
Dinosaurs Attack! is not from the 50's. It came out in 1988 and specifically was an homage to the original Mars Attacks cards from the 60's. Topps also did a series of mini-comics for Mars Attacks the same year that unfortunately were canceled after the 4th issue was released. My brothers and I collected both and they were awesome.