>>39546789It might be a case of consolidating evolutionary lines due to technical limitations.
Croconaw was originally a Fossilmon.
I think the other one was Togepi.
>In the cave, Ash, Pikachu, Team Rocket, and their Pokémon start to argue. Then, they soon notice that they are surrounded by mysterious glowing eyes and fall silent. Ash checks his Pokédex for details, and the Pokémon are revealed to be Omanyte, Omastar, Kabuto, and Kabutops. >As Ash and the gang leave, Ash takes the Egg out of his backpack, revealing that he had found it at the site.(This egg hatches into Togepi)
It's not like this type of retcon didn't happen before; the GS ball was supposed to hold a Celebi.
Because of the difficulties in Gold/Silver development, and them needing to scale back the map, they were retconned into normal Pokémon.