This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.
Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things. The half-life of carbon-14 is approximately 5,730 years. dinosaurs the evolution alleges lived millions of years ago.
You should keep this in mind when we are talking about determining the age of rocks.
A more relevant example: Let us say that a rock is sitting on the surface of the Moon.
Many rocks and organisms contain radioactive isotopes, such as U-235 and C-14.
The rock is then picked up by an astronaut, brought back to the Earth, and dated.
The age determined for that rock will be two billion years old, NOT three billion years old. The impact that uncovered the rock may have melted part of the rock, reseting the age clock for a portion of the rock. Most rocks returned by the Apollo missions are impact breccias.
The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating.
This restriction extends to animals that consume seafood in their diet.