And how does that have anything to do with this?
If the new fossil pokemon say that they evolve from specifically their own fossils (Dome Fossil, Helix Fossil, Old Ember) they evolve from those specific cards. If the text "Evolves from Mysterious Fossil" is not there, they can't be evolved from Mysterious Fossil.
A card will always tell you what it evolves from.
This does not apply to baby evolution and the pokemon that evolve through it. Since they can't really evolve from those cards. The baby's power just lets you put a certain card on the basic baby pokemon that counts as evolving. Two different things.