^^ The title says it all! Does anyone know the answer to this?! Thanks

Yeah, Corsola's drop. Come to think of it, I think one of the players is walking around with an egg in their inventory... forgot the name of 'em. Maybe do some detective work for yourself there, if ya want

Aside from that, you can always check this thread for all current egg drops in game https://zgaming.forumotion.com/t8-starter-guide (this thread usually gets updated a little while after new eggs are added into the game, like a couple of days or a week later, aside from wurmple still being in the list, its up to date)

Nonentity wrote: a week later, aside from wurmple still being in the list, its up to date)

That was my issue with the list. z.z I was using it to pick out a Pokemon to hunt eggs from and I spent the whole of one day massacring Wurmples just to find out the list was wrong and that Wurmple eggs weren't obtainable. 

^^ But thank you for the other information!