To truly understand the difference between polar and Palaeozoic gigantism, we need to delve into their respective origins.
The fossil comes from a strata that dates back 310 to 315 million years and marks the first Palaeozoic spider ever found in Germany.
The blue whale may no longer be the heaviest animal to ever inhabit Earth; there is now another contender.
The cave has been untouched for around 42,000 years. It also contained the bones and teeth of hyena pups, suggesting they raised their young there.
Newly discovered fossils from the Lower Cretaceous Lujiatun of the Yixian Formation in China show a deadly battle between a Gobiconodont mammal and a Psittacosaurid dinosaur.
Meganeuropsis permiana is an extinct species of insect that lived during the Carboniferous period. It is known for being the largest flying insect that ever existed.
Scientists have excavated fossils of 58 rhinos, 17 horses, 6 camels, 5 deers, 2 dogs, a rodent, a saber-toothed deer and dozens of birds and turtles in Nebraska.
The specimen provides the first unequivocal evidence of immature feathers in the Mesozoic fossil record.
The cub is almost 30,000 years old but still has her fur, skin, teeth, and whiskers intact.
Only 16 million years after the dinosaur-killing asteroid struck, ancient mammals known as 'thunder beasts' grew 1,000 times bigger.