No only when you get the national pokedex
you trade a Pokemon from a friend(not gts place)
104 before the national pokedex expansion
You have to wait until you beat Pokemon Black/White and obtain the National Dex before you are able to transfer Pokemon from Diamond and Pearl.
yes as long as you can get to the uostairs part of the Pokemon center
In Diamond/Pearl/Platinum you have to get the national dex before you can enter the pal park.
Yes as long as you are trading only Johto and Kanto before you acquire the National Dex.
Dialga, Uxie, Mesprit, Azelf, and probly Arceas.
Rampardos is a Pokemon special to Pokemon Diamond. The only Fossil you will get before you get the national dex in Pokemon pearl will be sheildon. After you get the National dex you will get Fossils from other games...But still not a cranidos. Hope that helped :3
The Pokemon you can get before the national dex is Dialga, Mesprit, Azelf, and Uxie. After the national dex is Giratina, Cresselia, Regigas, and Heatran. With mystery gift is Shaymin, Arceus, and Darkrai. You can get other legendary Pokemon by migrating/trading.
If you mean on the national pokedex, there is a VERY long list. In Sinnoh Dex, unknown and riolu (baby lucario)
No
At the beginning of the game before getting the national pokedex you can get: Skull Fossil - Cranidos *Exclusive to Pokemon diamond Armor Fossil - Sheildon *Exclusive to Pokemon pearl After receiving the national dex you can also find: Helix Fossil - Omanyte Dome Fossil - Kabuto Old Amber - Aerodactyl Claw Fossil - Anorith Root Fossil - Lileep