One-handed skill: Swords, Axes, Maces, any combination in duel-wield.
Two-Handers: Warhammers, Battleaxes, Claymores, Hand-to-Hand.
Blocking: Shield and shield plus any other one-handed weapon, spell, staff or parrying with any other weapon such as a two-hander.
Destruction (since I'm mainly on about combat skills): Lightning, Fire, Frost, Magicka/Health damage/drain and so on. All of which can be duel-wielded with themselves or another spell/one-handed weapon.
Marksman: Bows.
Seems like every other combat skill has a range of weapons and play styles to it but marksman has one option. It may as well be called archery as marksman suggests being proficient with any ranged weapon even though there is only bows. I'm hoping the marksman perk trees makes up for the lack of weapons. (I know this is also a problem with Oblivion but it just seems like something that would've been picked up on during Skyrims development.)
What does everyone else think? Think bethesda may be holding out on new ranged weapons?