Super Paper Mario happened in 2007.

of course

1.Paper Mario

2.Paper Mario(2): The Thousand Year Door

3.Super Paper Mario(3)

No paper Mario paper mario2 and super paper Mario are the same series

super Mario RPG is different. but they did get the idea of the paper series from it.

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Paper Mario 1 was going to be the sequel of SMRPG, but Square Enix and Nintendo, creators of SMRPG, split. Or Enix joined Microsoft. So Nintendo made Paper Mario not the same series. Paper Mario series- Paper Mario, the TYD, Super Paper Mario and Paper Mario 3DS are the same series.

Chapter 1-1