No, this doesn't push it back because this isn't DNA, it's genetic information but the information is recovered by decoding the proteins found in the enamel to

No, this doesn't push it back because this isn't DNA, it's genetic information but the information is recovered by decoding the proteins found in the enamel to generate the DNA/RNA string that produced them. It's kind of like making a mold from an existing widget when the original mold is gone.