Tag Archives: Cretaceous

Days were a half-hour shorter when dinosaurs roamed the Earth 70 million years ago

by Doyle Rice, USA Today

When dinosaurs roamed the Earth, days were about a half-hour shorter than they are today, a new study says.

Why is this? 70 million years ago, the Earth turned faster than it does today, rotating 372 times a year compared with the current 365, according to an analysis of an ancient fossil mollusk shell from the late Cretaceous period. 

This means a day lasted about 23½ hours.

Continue reading Days were a half-hour shorter when dinosaurs roamed the Earth 70 million years ago