Yeah some swedish melodeath like Gates Of Ishtar really brings black and death together and it helps understand why Dissection are sometimes classified the same way
Anyway, @Danic, also check out In Flames - The Jester Race, At the Gates - Slaughter of the Soul, Amon Amarth - With Oden on Our Side, and Carcass - Heartwork for some foundations of the genre.
Gothenburg stuff, real early melodeath, is a lot closer to Dissection, so it kind of makes sense to me now. Bad English has a couple of articles on northern Swedish metal that can point you in that direction.