There were no animals on this planet 80 million years ago.
Dinosaurs inhabited the earth during the Mesozoic Era, which lasted between around 200 million to around 60 million years ago. The fossil in question is from the Cretaceous period, which began around 145 million years ago and produced the T-Rex and other famous dinosaurs.
Seems there were.
What was here 80 million years ago? 8oo million years ago, etc.?
Who is to say that God hasn’t practiced things on the planet a few times? Sort of like an Etch A Sketch? Wiped the planet clean and started over.
There was no... 80 million years ago.
You know this because a space alien told you?