One million is one thousand thousands. Three million is then three thousand thousands.
Year 17990 BC.
.3 is the same as three tenths. Three tenths of one million is three hundred thousand years.
393 years ago this 2009 year x x
It is 2011 now :')And 45 years ago it would have been 1966
Allosaurus fossils date to between 155 and 150 million years ago. Presumably they died out around 150 million years ago.
The youngest known fossils of Apatosaurus date to 150 million years ago. Thus, Apatosaurus probably died out around 150 million years ago.
150 millions years ago Earth was in the late Jurassic period.
150,000,000 150 million
150-155 million years ago
pangea?
1862
No, snakes evolved much later, in the Early Cretaceous epoch, about 150 million years ago.
The lived in North America from 150 million years ago until 66 million years ago. (None live now.)
Apatosaurus fossils date to between 154 and 150 million years ago. After that, they disappear from the fossil record, so it is safe to say they probably died out around 150 million years ago.
Stegosaurus fossils date to between 155 and 150 million years ago. Presumably they died out around 150 million years ago, during the Tithonian stage of the Jurassic period.
Archaeopteryx lived in Europe between 150.8 and 148.5 million years ago. Diplodocus lived in North America between 154 and 150 million years ago. Stegosaurus lived in North America and Europe between 155 and 150 million years ago. Brachiosaurus lived in North America between 154 and 153 million years ago.