Scientists took dinosaurs' temperatures using fossilized eggshells.
50 million year-old sperm was found preserved in worm cocoons in Antarctica. It is the oldest animal sperm ever discovered.
Today scientists announced the discovery of 125 million-year-old hair follicles on a creature that resembled a large rat. The hairs are 60 million years older than their closest counterpart, and they show that mammals were already a furry group of creatures even during the time of dinosaurs.
A feathered cousin of the velociraptor was found much to the delight of paleontologists, who weren't happy with the scaly look of dinosaurs in the Jurassic World blockbuster.
A study found that your tooth enamel might have started as scales on ancient armored fish.
We learned that human-sized sea scorpions once roamed the early oceans.
And a brand new relative of the triceratops was found in Canada. Scientists named her Wendy.