It is at the Parchment Desert.
Cheirus fossils can be found on Secret Island, in the Crashed Starship. It's a bit uncommon, so you may have to travel to the site a few times.
Yes! You can send fossils from fossil fighters to fossil fighters champions via the fossil cannon, located in Ribular town in Fossil Fighters Champions.
no
No but you can send fossils from fossil fighters to fossil fighters champions.
No there is not
nowhere
you cant sorry
dropping fossils are found in dark fossils anywhere around vivosaur island.
No but you can use the fossil cannon to shoot FOSSILS (NOT vivosaurs) to champions from the original, not vice-versa.
you can't its impossible
At Parchment Desert
Yes At the BB Base