That's easy, it's the Skull Fossil, which then seems to evolve into Cranidos. Which is 10x better than Shieldon. (STATS)
No you have to get the armor fossil and revive it then evolve it to a kabutops
(KANTO,JOHTO & HOEEN)kabuto, omanyte, arnorith and lileep evolve at level 40 (SINNOH)shieldon and cranidos evolve at level 30 (UNOVA)tirtouga and archen evolve at level 37
Cranidos is a Rock type Pokemon that can be revived from a Skull Fossil in Pokemon Diamond. It will evolve into Rampardos at level 30.30
take it to the pewter museum and talk to the guy with the black hair he will take your fossil and make it into an omanyte
the skull fossil
either: cast fossil petrified fossil imprint fossil trace fossil
Here are all the fossil Pokemon (as of November 2015):AerodactylAmauraAnorithArchenArcheopsArmaldoAurorusBastiodonCarracostaCradilyCranidosKabutoKabutopsLileepOmanyteOmastarRampardosShieldonTirtougaTyrantrumTyrunt
placoderms (an ancient jawed fish)
You take a amargo fossil from dusty dunes and super evolve it.
Helix fossil turns into Omanyte once you bring it to the Fossil guy on Cinnabar Island in the old Research facility. The Dome fossil turns into Kabuto. And then you can get the Amber from the Museum, which will turn into Aerodactyl
ha
it evolves into a kabuto
Jungle Labyrinth. You can evolve it with a miraculous fossil rock to get a Nycto Ace.
cover fossil (or japanese translation shell fossil) then tirtouga (level 37) carracosta.
No people Aerodactyl doesn't evolve hes just a very old fossil that doesn't evolve.
Yes, Shieldon evolve into Bastiodon. Cranidos evolve into Rhampardos. You need the Shield or Armor fossil to get Shieldon and Skull fossils to get Cranidos.