It's official: Helix Fossil, Some Fossil and Old Amber will go by the extended names of Antique Helix Fossil, Antique Dome Fossil and Antique Old Amber respectively. I can see future releases for Antique Root Fossil, Antique Claw Fossil, Antique Skull Fossil, Antique Armor Fossil, Antique Cover Fossil, Antique Plume Fossil, Antique Jaw Fossil and Antique Sail Fossil respectively.
I wonder how they will handle the Galar Fossil Pokémon...
My prediction:
Dracozolt = Fossilized Bird + Fossilized Drake
Arctozolt = Fossilized Bird + Fossilized Dino
Dracovish = Fossilized Fish + Fossilized Drake
Arctovish = Fossilized Fish + Fossilized Dino
I think you will need to combine the said fossils in the future in order to play them. I can't see them going down the Rare Fossil route again.