Fossils are dated now by

Which of the following is not true regarding $Archaeopteryx$?

Analogous organs are:

Most primitive living mammals,which provide evidence of organic evolution from geographical distribution,are found in:

Closer evolutionary relationship of humans to chimpanzees,gorillas,and orangutans can be observed by

The age of fossils was traditionally determined by radio-carbon dating and other methods involving radioactive elements found in the rocks. More precise methods currently used for determining the evolutionary time of different groups of organisms include: