(TMZ) - Pauly D's bloodline will live on, because he has a little girl crawling around - near the Jersey Shore ... TMZ has learned.

Here's what TMZ knows: The mother is 26, born in Jersey but she met Pauly in Vegas last year.  TMZ reports they hooked up while he was DJing in Sin City.

The baby is a few months old, living with her mom.

The mom has filed court docs in New Jersey to formally establish paternity, but TMZ has learned Pauly has already taken a DNA test and he's the dad.

Pauly tells TMZ, "I'm proud I'm a father.  I am excited to embark on this new part of my life."

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