Recent advances in ultrafiltration techniques have expanded the dating range of radiocarbon. It now seems feasible to reliably date bones up to 55,000 years.

How do you date old bones?

The Carbon 14, or radiocarbon dating method is one of the best-known methods of dating human fossils and has been around since the late 1940s. The Carbon 14 (14C) dating method is a radiometric dating method. A radiometric dating uses the known rate of decay of radioactive isotopes to date an object.

Can bones be radiocarbon dated?

Our results show that reliable radiocarbon dates can be measured on mid- to well-preserved bones samples, using as little as 3 mg of bone. These results open the way for the routine radiocarbon dating of small bone samples.

How do you date fossilized bones?

Fossils themselves, and the sedimentary rocks they are found in, are very difficult to date directly. Instead, other methods are used to work out a fossils age. These include radiometric dating of volcanic layers above or below the fossils or by comparisons to similar rocks and fossils of known ages.