Marvel Animated Universe (1990s) - Timelines

Earth-92131
X-Men
Spider-Man
X-Men '97

Earth-534834
Iron Man
Fantastic Four
The Incredible Hulk

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Silver Surfer

Earth-730784
The Avengers: United They Stand

Earth-751263
Spider-Man Unlimited
Remember that this is not set in stone. The website responsable for this list (http://www.marvunapp.com/master/earthteaz.htm) has made a few mistakes in the past. It's not fully official. With the producer saying that for him it was all canon, maybe it's worth to watch everything. It doesn't mean it's all correct, because maybe they didn't even care about that in that time. It was only in 2014 with the new Star Wars canon that in Disney they started hiring people responsable to maintain the franchises' canons correct.
 
How so? Because they mention the Crystal thing from the Inhumans 3 parter in that F4\Hulk episode…
The Fantastic Four appear in The Incredible Hulk and are familiar with him from the prior episode.

Remember that this is not set in stone. The website responsable for this list (http://www.marvunapp.com/master/earthteaz.htm) has made a few mistakes in the past. It's not fully official. With the producer saying that for him it was all canon, maybe it's worth to watch everything. It doesn't mean it's all correct, because maybe they didn't even care about that in that time. It was only in 2014 with the new Star Wars canon that in Disney they started hiring people responsable to maintain the franchises' canons correct.
The website isn't fully responsible for the list though. It is established in the guidebooks, and generally those comply with that list because it is partially official. I trust it more than the X-Men '97 creatives to be honest.
 
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