This implies that Omanyte, Kabuto, Aerodactyl, Lileep, Anorith, Cranidos, Shieldon, Tirtouga, and Archen are the one Pokémon popping out of eggs you get from buddies’ presents. With this shift, none of those will hatch out of some other eggs and Riolu will now hatch out of 10 km eggs.
There isn’t a set date for this fossil bonanza to finish, however you should use this chance to seize a bunch of Cranidos, should you’re fortunate. Its evolution, Rampardos, is among the greatest rock-type attackers within the game. Bastiodon, the advanced type of Shieldon, can also be a fairly stable Great League PvP Pokémon.
Tirtouga and Archen are nonetheless pretty new additions to this game, so that is additionally likelihood to seize them and sufficient sweet to evolve them. Of course, you might be unfortunate and find yourself with a bunch of Omanyte or Lileep that you just don’t want anymore.
Note that this transformation doesn’t have an effect on any 7 km eggs you’ll have gotten earlier than right now. Those will nonetheless have older Pokémon in them, however any egg you get from buddies beginning now will hatch fossil Pokémon.