>>13403290> no carbontriatic ammonite, 100% CaCO3, 12,24% Carbon.
>>13402295Catholic church inventing 700 years of history to legitimate their hereditary rights.
Just kidding. C14 availability is highly depending on cosmic radiation, which is varying throughout the ages. Sunspot activity seems to play a mayor role.
That is why you always try to doublecheck. If it`s a peace of wood, dendrochronology can be very specifc.
If its cloth, weaving style and material can confirm your C14 results.