Welcome to Prehistoric World
Discover the fascinating creatures that once roamed our planet
Featured Creatures
Featured Creatures
Raptorex lancensis
Cretaceous
The Raptorex was a small but significant tyrannosaurid dinosaur that lived approximately 125 million years ago during the Early Cretaceous ...
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Majungasaurus crenatissimus
Cretaceous
Majungasaurus was a formidable theropod dinosaur that thrived during the Late Cretaceous period, approximately 70 million years ago, in what ...
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Livyatan melvillei
Neogene
Livyatan is an extinct genus of gigantic predatory whale that inhabited the oceans during the Miocene epoch, approximately 12 to ...
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Updated: February 14, 2025 at 6:47 PM
Dimetrodon limbatus
Period: Permian
Dimetrodon, an extinct genus of non-mammalian synapsids belonging to the family Sphenacodontidae, lived during the Cisuralian age of the Early ...
Did You Know?
Not All Dinosaurs Were Giants
While many famous dinosaurs were enormous, the smallest known dinosaur was the Compsognathus, only about the size of a chicken!
Ordovician-Silurian extinction
The Ordovician-Silurian extinction, around 445 million years ago, was caused by a rapid ice age and fluctuating sea levels, eliminating nearly 85% of marine species.
Earth's Oxygen Revolution
About 2.4 billion years ago, the "Great Oxidation Event" dramatically increased Earth's oxygen levels, making complex life possible.
First Land Animals
Tiktaalik, living 375 million years ago, was one of the first vertebrates to venture onto land, with primitive lungs and leg-like fins.
Birds Are Living Dinosaurs
Modern birds are actually living theropod dinosaurs, having evolved from a group of dinosaurs called maniraptors.
Prehistoric Super-Sized Insects
During the Carboniferous period, insects grew to enormous sizes due to higher oxygen levels. Dragonflies had wingspans up to 65 cm!
Snowball Earth
Around 700 million years ago, Earth was almost completely covered in ice during the "Snowball Earth" period, with temperatures as low as -50°C.
The First Flower
The first flowering plants appeared around 130 million years ago, during the Cretaceous period, revolutionizing plant evolution.
The Great Dying
The Permian-Triassic extinction event, known as "The Great Dying," wiped out about 95% of marine species and 70% of land species.
The K-Pg extinction
The K-Pg extinction, caused by an asteroid impact 66 million years ago, wiped out 75% of species, including non-avian dinosaurs, due to climate shifts, wildfires, and tsunamis.