evolution
Pterosaurs Were Not Dinosaurs
Despite flying alongside dinosaurs for 150 million years, pterosaurs were NOT dinosaurs—they were flying reptiles in a completely separate group. Some had fur-like covering called pycnofibers!
Welcome to Prehistoric World
Discover the fascinating creatures that once roamed our planet
Featured Creatures
Featured Creatures
Spriggina
Proterozoic
Spriggina is one of the most intriguing fossils from the Ediacaran period, living approximately 550-560 million years ago. With its distinctive horseshoe-shaped head and segmented body, it has sparked decades of ...
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Basilosaurus cetoides
Paleogene
Basilosaurus cetoides was one of the largest and most fearsome predators of the ancient seas, living approximately 40-34 million years ago during the Late Eocene epoch. ...
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Bajadasaurus pronuspinax
Cretaceous
Bajadasaurus, meaning "downhill lizard," was one of the weirdest-looking dinosaurs ever discovered! Living during the Early Cretaceous period, about 140 million years ago in what is now Argentina, this ...
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Latest Discoveries
September 26, 2026
Charnia
Proterozoic
Charnia is one of the most important fossils ever discovered! This mysterious frond-shaped organism lived during the Ediacaran period, approximately 575 to 555 million years ago, making it one of Earth's oldest known complex life forms. Charnia was the...
Location: England, Canada, Australia, Russia
Scientific Name: Charnia masoni
September 26, 2026
Tribrachidium
Proterozoic
Tribrachidium is one of the strangest creatures to ever exist! Living during the Ediacaran period about 558-555 million years ago, this bizarre disc-shaped organism had three-fold symmetry — a body plan found in no living animal today. It...
Location: Australia, Russia, Ukraine
Scientific Name: Tribrachidium heraldicum
September 26, 2026
Spriggina
Proterozoic
Spriggina is one of the most intriguing fossils from the Ediacaran period, living approximately 550-560 million years ago. With its distinctive horseshoe-shaped head and segmented body, it has sparked decades of debate about whether it represents...
Location: Australia
Scientific Name: Spriggina floundersi
September 26, 2026
Wiwaxia
Cambrian
Wiwaxia is one of the strangest creatures from the Cambrian Explosion, living approximately 508 million years ago. This bizarre armored slug-like animal was covered in overlapping scales and tall defensive spines, making...
Location: Canada (Burgess Shale), China
Scientific Name: Wiwaxia corrugata
September 26, 2026
Pikaia
Cambrian
Pikaia is one of the most important fossils ever discovered—it may be one of our earliest ancestors! This small, leaf-shaped swimmer lived approximately 508 million years ago during the Middle Cambrian period....
Location: Canada (Burgess Shale)
Scientific Name: Pikaia gracilens
September 26, 2026
Olenoides
Cambrian
Olenoides serratus is one of the most famous and scientifically important trilobites ever discovered! Living approximately 508 million years ago during the Middle Cambrian, this trilobite is celebrated for its exceptional...
Location: Canada (Burgess Shale), USA
Scientific Name: Olenoides serratus
September 26, 2026
Ottoia
Cambrian
Ottoia was a fearsome predatory worm that terrorized the Cambrian seafloor approximately 508 million years ago. As the most abundant worm in the famous Burgess Shale, this priapulid (penis worm) used its...
Location: Canada (Burgess Shale), USA (Utah)
Scientific Name: Ottoia prolifica
February 2, 2026
Dickinsonia
Proterozoic
Dickinsonia is one of the most mysterious and ancient creatures ever found! Living during the Ediacaran period about 558-555 million years ago, it was one of Earth's earliest complex life forms. This bizarre oval-shaped organism lived...
Location: Australia, Russia, Ukraine
Scientific Name: Dickinsonia costata
February 2, 2026
Orthoceras
Ordovician
Orthoceras was an ancient straight-shelled nautiloid—an early relative of today's squids and octopuses! Living from the Ordovician to Triassic periods (around 485-200 million years ago), these jet-propelled hunters had long, cone-shaped shells and were among the...
Location: Worldwide (Morocco, Sweden, North America)
Scientific Name: Orthoceras regulare
February 2, 2026
Birkenia
Silurian
Birkenia was a tiny jawless fish that swam in ancient Silurian seas about 430 million years ago! At only 10 cm (4 inches) long, this small but important fish was an anaspid—one of the early vertebrates that...
Location: Scotland, Norway
Scientific Name: Birkenia elegans
February 2, 2026
Tiktaalik
Devonian
Tiktaalik is one of the most important fossils ever discovered—a 375-million-year-old "fishapod" that shows the transition from fish to land animals! Found in the Canadian Arctic in 2004,...
Location: Arctic Canada (Ellesmere Island)
Scientific Name: Tiktaalik roseae
February 2, 2026
Phorusrhacos
Neogene
Phorusrhacos was one of the most terrifying "terror birds"—giant flightless predatory birds that ruled South America for millions of years! Standing 2.5 meters (8 feet) tall with a massive hooked beak, this apex...
Location: South America (Argentina)
Scientific Name: Phorusrhacos longissimus
February 2, 2026
Smilodon
Quaternary
Smilodon, the famous "saber-toothed cat," was one of the most iconic predators of the Ice Age! Living from about 2.5 million to 10,000 years ago, this powerful cat had enormous canine teeth that could...
Location: North and South America
Scientific Name: Smilodon fatalis
February 2, 2026
Woolly Rhinoceros
Quaternary
The Woolly Rhinoceros was a massive, shaggy beast that roamed the frozen steppes of Ice Age Europe and Asia! Living from about 350,000 to 10,000 years ago, this incredible animal was perfectly...
Location: Europe, Asia
Scientific Name: Coelodonta antiquitatis
February 2, 2026
Gorgonops
Permian
Gorgonops was one of the most fearsome predators of the Late Permian period, approximately 260-252 million years ago! Named after the Gorgons of Greek mythology (monsters with snakes for hair), this...
Location: South Africa
Scientific Name: Gorgonops torvus
Did You Know?
discovery
Dinosaurs Lived on Every Continent
Dinosaur fossils have been found on all seven continents, including Antarctica! When dinosaurs lived, Antarctica was much warmer and connected to other landmasses.
environment
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!
discovery
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.
dinosaur
T-Rex Teens Gained 45 lbs Per Week
During their teenage growth spurt, T-Rex gained 35-45 pounds PER WEEK until reaching adult size around age 20! Growth rings in SUE's bones revealed this incredible growth rate.
environment
Oxygen Made Giant Insects Possible
During the Carboniferous period, oxygen levels reached 35% (vs 21% today). This allowed insects to grow huge—millipedes reached 2.5 meters (8 feet) long!
environment
Pangaea: When All Land Was One
About 335 million years ago, all continents were joined into one supercontinent called Pangaea. You could have walked from Antarctica to the Arctic!
environment
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.
evolution
Horseshoe Crabs: 450 Million Years Old
Horseshoe crabs have remained virtually unchanged for 450 million years—they existed before dinosaurs, survived all mass extinctions, and still live today! They're older than trees and sharks.
dinosaur
Spinosaurus: A Swimming Dinosaur
Spinosaurus had a paddle-like tail and dense bones for buoyancy—it was semi-aquatic! This 15-meter predator hunted fish in rivers like a giant crocodile-dinosaur hybrid.
discovery
Dinosaurs Didn't Roar Like in Movies
Scientists believe dinosaurs made closed-mouth sounds like cooing, booming, or growling—similar to crocodiles and ostriches today—not the dramatic roars from Jurassic Park!
discovery
The "Dueling Dinosaurs" Fossil
A T-Rex and Triceratops were found fossilized together, possibly killed while fighting! The Triceratops has a T-Rex tooth embedded in its body—evidence of a real prehistoric battle.
discovery
Fossil Poop Reveals Dino Diets
Scientists study fossilized dinosaur poop (coprolites) to learn what they ate! A 2024 study of 500+ coprolites showed early dinosaurs were "opportunistic" eaters—they ate everything.
evolution
Blue Whales: Bigger Than Any Dinosaur
The blue whale is the largest animal EVER—bigger than any dinosaur! At 200 tons, it weighs twice as much as the largest dinosaurs. Some dinosaurs were longer, but none were heavier.
evolution
Birds Are Living Dinosaurs
Modern birds are actually living theropod dinosaurs, having evolved from a group of dinosaurs called maniraptors.
evolution
Walking Whales
Early whales like Ambulocetus had legs and could walk on land, showing the remarkable transition of mammals back to marine life.
discovery
The Fish That Came Back From Extinction
The coelacanth was thought extinct for 65 million years—until one was caught in 1938! Called a "living fossil," it has barely changed in 400 million years and was like finding a living dinosaur.
environment
One Day Was Only 22 Hours Long
When dinosaurs roamed Earth, days were shorter! The Moon's gravity is slowly slowing Earth's rotation. 200 million years ago, a year had about 385 days.
dinosaur
T-Rex: Strongest Bite Ever on Land
T-Rex could bite with a force of up to 57,000 Newtons—like having a medium-sized elephant sit on you! This is the strongest bite force of any land animal that ever lived.
discovery
SUE: The Most Famous T-Rex
SUE is the largest and most complete T-Rex ever found—90% of the skeleton! The Field Museum paid $8.4 million for SUE in 1997, the most ever paid for a fossil at auction.
evolution
Sharks Are Older Than Trees
Sharks have been swimming in Earth's oceans for about 450 million years—that's 100 million years before the first trees appeared! They survived all five mass extinctions.
discovery
Dinosaurs Traveled in Herds
Trackway evidence proves many dinosaurs traveled in herds! Parallel footprints in Texas and Colorado show sauropods moving together, and the "Dinosaur Freeway" in Colorado stretches 40 miles.
evolution
Megalodon: 7-Inch Teeth Monster
Megalodon's teeth could reach 7.5 inches (19 cm)—three times larger than great white shark teeth! This 20+ meter shark had the strongest bite of any animal ever: 182,000 Newtons.
dinosaur
Velociraptors Were Turkey-Sized
Real Velociraptors were only about 0.5 meters tall and weighed 15 kg—roughly the size of a turkey! The "raptors" in Jurassic Park were actually based on the larger Deinonychus.