Carbon dating exposed
AMS lab results with this sample will be inaccurate.
In cases when the protein portion of the bone sample is not well preserved and have already degraded due to warm conditions and fungal or bacterial attack, AMS dating labs carbon date individual amino acids to check if several of them give the same radiocarbon age.
Modern sources of carbon can make the AMS carbon dating result of a bone younger than its true age.
In general, infinite-age contaminants add considerable number of years to the true age of a bone sample, making it older than it is.
According to literature, other organic compounds that can contaminate bone samples are polyphenols, polysaccharides, lignins, and degraded collagen.
Depending on the location of the excavation, bones can also be contaminated by limestone.