Why do Archen and Archeops belong in the Water 3 egg group?

They arelisted here.

Pleaselog inorregisterto add a comment.

Alright, I’ll have a go at answering this.

Fossils are most commonly found in Sedimentary Rock.

Sedimentary Rock itself is most commonly formed by sediments being moved by WATER. This water then squeezed out by a massive amount of pressure, leaving you with sedimentary rock.

Is it a tenuous connection? Yes, it is. But it is the only reason I could think of. As for why Water 3, in particular, it is really on the only Water egg group that fits. Water 1 contains all the Water-types that work well on both water and land (e.g. Squirtle, Politoed, etc.). Water 2 contains all the fish-type Water Pokemon (e.g. Carvanha, Lanturn, etc). Water 3 contains pretty much any of those Pokemon either based on a crustaceans, or have a vague connection to the water (e.g. Krabby, Skorupi, etc).

Sources:Fossils in Water,Sedimentary Rock

To add more variety to the gameevery fossil pokemon but aerodactyl is there.

And I quote:“The last of three water egg groups, Water 3 is a mix of different pokemon types, including fossil pokemon, crabs and invertebrates”