In CA, no, this is NOT possible. You need to get a copy of the quitclaim deed to see how it was executed. My take is that if the property was local, the SD County Recorder’s Documents Examiners would NOT have allowed such a deed to record without your signature.
yogamom, I feel you have either been fed the wrong story or your name was NOT on the deed to begin with.
Perhaps someone forged your signature?? I have seen this before, on a few occasions. Yes, even with the “crooked” (familial) notarial seal.
Search for your name here, last_first with no comma. Then find the supposed “quit-claim deed” in question. Write down the document number and go down to to the County Recorder’s office and give the clerk the document number and buy it at $2 per pg (should be 1-2 pgs). Then you will have your answer.