Words similar to million-year-old

Example sentences for: million-year-old

How can you use “million-year-old” in a sentence? Here are some example sentences to help you improve your vocabulary:

In 2000, a team of United States researchers claimed to have cultured a bacterium sealed inside a 250-million-year-old salt crystal [9].
Scientists found a new candidate for the missing link between apes and humans . The 2.5 million-year-old creature, dubbed Australopithecus garhi , evidently used stone tools to carve up the animals it killed and had much bigger teeth than its apelike ancestors.
The oldest rocks are 500 million-year-old slates found around the northern peak of Skiddaw, where the mountains have smooth and rounded profiles.
According to Michael Lee of the University of Sydney and Michael Caldwell of Chicago's Field Museum, the 100-million-year-old fossil, christened Pachyrachis problematicus ("problematic thick-ribbed animal") in the late 1970s, is a proto-snake with two legs.
In 1994, while Jurassic Park was still taking in millions of dollars at the box office, scientists claimed to have extracted and sequenced DNA from an 80-million-year-old dinosaur [1].