What time period was 80 million years ago?

What time period was 80 million years ago?

Cretaceous
The Cretaceous ( /krəˈteɪʃəs/ krə-TAY-shəs) is a geological period that lasted from about 145 to 65 million years ago (Mya). It is the third and final period of the Mesozoic era, as well as the longest. At nearly 80 million years, it is the longest geological period of the entire Phanerozoic.

What was alive 85 million years ago?

Cretaceous Period Facts and Information | National Geographic. Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago, and thrived as a top land predator until the dinosaurs went extinct 20 million years later.

Why is it called the Cretaceous period?

The Cretaceous is the longest period of the Phanerozoic Eon. Spanning 79 million years, it represents more time than has elapsed since the extinction of the dinosaurs, which occurred at the end of the period. The name Cretaceous is derived from creta, Latin for “chalk,” and was first proposed by J.B.J.

What is the Cretaceous period known for?

The Cretaceous Period. The Cretaceous is usually noted for being the last portion of the “Age of Dinosaurs”, but that does not mean that new kinds of dinosaurs did not appear then. It is during the Cretaceous that the first ceratopsian and pachycepalosaurid dinosaurs appeared.

Which dinosaur lasted the longest?

Argentinosaurus
Argentinosaurus is a double award winner being also the longest dinosaur.

What animal has evolved the most?

tuatara
The research will be published in the March issue of Trends in Genetics. “What we found is that the tuatara has the highest molecular evolutionary rate that anyone has measured,” Professor Lambert says.

What year did dinosaurs exist?

Non-bird dinosaurs lived between about 245 and 66 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans, Homo sapiens, appeared. Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous.