Find out what the earliest known fossil bird is called and approximately how many years ago it lived. Provide the name of the bird and its approximate age.
Navigate to a reliable source about dinosaurs or prehistoric birds. Locate information about the earliest known fossil bird. Identify the name of this bird. Identify the approximate age when this bird lived.
The earliest known fossil bird is identified as 'Archaeopteryx'. The approximate age is stated as '150 million years ago'.