After Dinosaurs Went Extinct, These Ten Giant Creatures Roamed the Earth, Science

Though we often think of the “terrible lizards” as behemoths, many later reptiles and mammals also grew to massive sizes

Five amazing extinct creatures that aren't dinosaurs

What Caused the Dinosaur Extinction? - The Atlantic

Cretaceous Dinosaurs - Fossils and Paleontology (U.S. National Park Service)

After Dinosaurs Went Extinct, These Ten Giant Creatures Roamed the Earth, Science

6 of the Largest Prehistoric Animals Ever (Weighed More than 10 Elephants!) - A-Z Animals

Biggest dinosaur list: 10 of the largest dinosaurs ever roamed on Earth

Early humans wiped out big animals in Australia, Earth

A newfound dinosaur had tiny arms before T. rex made them cool

9 Massive Prehistoric Animals that Lived Before Dinosaurs - A-Z Animals