Fossils have animals, plants and living organisms imprinted into them, it helps us understand what lived and thrived in certain environments. The age of the rock can also help you understand when that thing lives.I hope this helps!
Maybe detritivore and parasite. That's the best I can think of
Explanation:
Well...it won't work, the bulky muscles aren't imprinted in the genes, it's only traits that are imprinted in the genes that can be transmitted to an offspring, so unless the muscular dude has a way of imprinting muscular traits on his genes, he would have to take his kids to the gym to workout, everyday, for a whole year. I hope this was helpful