Niantic have announced changes to the 7km eggs in Pokemon Go, making them hatch exclusively fossil Pokemon.
The reasoning behind this is unclear but it could potentially be something to do with the Pokemon Go lore. The official Pokemon blog announced the following: "It appears something strange has happened with the Eggs you can receive from Gifts: 7km Eggs are now hatching only fossil Pokémon!"
Previously the 7km eggs, which are obtained by opening gifts from friends, featured an array of different Pokemon.
Now though, trainers will have Omanyte, Kabuto, Aerodactyl, Lileep, Anorith, Cranidos, Shieldon, Tirtouga, and Archen to try and hatch. This includes all fossil Pokemon from generations 1 to 4 other than Relicanth, which is a regional exclusive.
Which are the best fossil Pokemon?
All of these are rock-types, which isn't exactly shocking since they're all technically fossils. In truth, most of these don't really have a place in the Pokemon Go meta but there a few which are worth getting.
Rampardos is the evolved form of Cranidos and hails from the Sinnoh region. This might come as a surprise to a lot of trainers but Rampardos has the sixth, yes that's right sixth-best attacking stats in the whole of Pokemon Go.
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Its defense is comparatively poor but that doesn't mean Rampardos isn't a valuable asset to your team. Now is a good time to get the Head Butt Pokemon too, as it is an excellent counter to Tornadus, which is currently the featured legendary Pokemon in Raid Battles.
Bastiodon is the other fossil Pokemon to come from Gen 4 and, in terms of stats, is the opposite of Rampardos. It has an incredible defense - again the sixth-best - but very poor attacking stats.
Unfortunately, though, Shieldon's evolution isn't particularly worthwhile having in your team. It does have a place in PvP within the Great League, though.
Another fossil Pokemon with incredible attacking stats - the eighth-best this time. Unlike Rampardos though, it has acceptable defense stats.
However, while on paper the First Bird would seem a species you'd want on your team, it really isn't. Its movesets provide zero help, relegating it to simply not worthwhile having. Of course, if the moves are rebalanced by Niantic then Archeops could once again be a consideration.
Riolu just got even rarer
With these changes, Riolu will now be hatching in 10km eggs only. The Emanation Pokemon is a fan favorite among trainers, which may explain why you rarely see it in Pokemon Go.
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Unfortunately, it has just become even rarer. 10km eggs mean fewer hatches but, more importantly, they're harder to come across as 7km eggs can be obtained with ease from friends.
Its evolved form of Lucario is also an excellent Pokemon to call in order to defeat Giovanni.
Elsewhere, fellow rare and popular species Gible and Deino remain in the 10km egg pool. If you're looking for any of these then you best get your walking boots on, trainers.