On route 224 with the pokéradar.
You can get Duskull by using the Pokeradar on Route 224 in Pokemon Diamond. You must use the Pokeradar at night in order to find and catch Duskull.
you have to catch a duskull on route 224 and raise him to get dusclops
in the shaymin area you can mostly catch him at night..
You can find a Duskull in Pokémon Diamond by using a PokéRadar at Route 224 with a Rarity of 2%.
You can catch Duskull in Pokemon Platinum by going to the Lost Tower that is near Solaceon Town however you can only find it at night.
Turnback cave.
It is very rare but you can catch it at mount Pyre.
you can find it on route 224 (with a pokerader) NOTE: this is very very rare so it could take you Weeks to find it.
The Pokemon Dusclops evolves from the form Duskull at level 37. This Pokemon has a relatively high catch rate, so finding one in this game should not be that difficult for you.
Use PokeRadar on Route 224. There is a 2% chance and the Duskull will be level 23.
route 224, found with Pokemon radar. AT NIGHT!
Pokeradar on Route 224. It's easier just to catch Duskull in the Lost Tower at Night in Platinum. (Duskull don't appear there in D/P, only Platinum.)