Welcome to Prehistoric World
Discover the fascinating creatures that once roamed our planet
Featured Creatures
Featured Creatures
Irritator challengeri
Cretaceous
Irritator was a medium-sized, predatory theropod dinosaur that lived during the Early Cretaceous period, approximately 110 to 100 million years ...
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Dimetrodon limbatus
Permian
Dimetrodon, an extinct genus of non-mammalian synapsids belonging to the family Sphenacodontidae, lived during the Cisuralian age of the Early ...
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Deinosuchus hatcheri
Cretaceous
Deinosuchus is an extinct genus of giant crocodyliform that lived during the Late Cretaceous period, around 82 to 73 million ...
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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!
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.
The First Flower
The first flowering plants appeared around 130 million years ago, during the Cretaceous period, revolutionizing plant evolution.
Hangenberg event
The Hangenberg event, about 359 million years ago, was a mass extinction at the Devonian-Carboniferous boundary, caused by global cooling and anoxic oceans, wiping out many 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.
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 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.
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.