Yesterday morning i recently got the last fossil that i needed to complete the museum collection.

Blather told me that everything was done, but i heard from somewhere that you are supposed to get something for completing this.

Any help would be great.

Nope. You get the Museum Model for completing all of the sections of the museum. You don't get anything for just completing one section.

Congratulations on completing the fossil section though. I still haven't completed it on wild world or city folk.

i completed fossils and fish.