[Junior]

They have claimed that dinosaurs are some of the oldest species on earth ...

I doubt that seriously. Dinosaurs appear about 220 million years ago. Complex life on this planet came into existence 600 million years ago, and simple life goes back about 3.8 billion years. To claim that "dinosaurs are some of the oldest species on earth" stretches the truth to nearly the breaking point."

[DittoJed2]

I will clarify what I was thinking. I'm thinking animal life. Dinosaurs are theorized to be older than a ton of what we see today.