I believed what my dad told me, that Dino's were big massive vegetation lawn mowers that would later die and provide oil for humans later. He believed this was all in Jehovah's plan...yeh right...oil!!
when I was young there was a lot more church attendance and a higher percentage that believed the Bible was from God so it was not just JW'S. I recently was viewing an old Looney Tunes cartoon, black and white so really old, and in it was a caveman alongside dinosaurs. I think it was more or less the general opinion in the mid 20th century among the bible believing populace that Dino's and humans coexisted. No one really Thought about it so when we saw Dino bones at a museum we just went "ooh, isn't that big?"
It wasn't until the Internet for me that I started putting the time frames together and THINKING about it and it truly was wtf moment. Before I just didn't go any deeper than what I was told and I think JW'S aren't the only ones that did that.