Tyrannosaurus Rex
The king of the tyrant lizards
Dinosaurs & Extinct Animals
Prehistoric beasts that once ruled the planet, measured for modern comparison.
Velociraptor
A feathered pack hunter the size of a turkey, not a movie monster
Woolly Mammoth
The ice age icon with tusks longer than a car
Megalodon
A prehistoric shark with jaws wide enough to swallow a car
Dodo
The flightless bird whose name became synonymous with extinction
Brachiosaurus
A sauropod tall enough to peer into a four-story window
Stegosaurus
The plated dinosaur with a brain the size of a walnut
Pteranodon
A flying reptile with a wingspan wider than a small airplane
Triceratops
The three-horned tank of the Late Cretaceous
Spinosaurus
The sail-backed aquatic predator larger than T. rex
Ankylosaurus
The armored dinosaur with a built-in wrecking ball
Diplodocus
The long-necked whip-tailed giant of the Late Jurassic
Giganotosaurus
The giant southern lizard that rivaled T. rex in size
Microraptor
A four-winged feathered dinosaur the size of a crow
Argentinosaurus
Possibly the heaviest land animal that ever lived
Quetzalcoatlus
The largest flying animal ever, tall as a giraffe
Compsognathus
A chicken-sized predator from the Late Jurassic
Parasaurolophus
The trombone-crested duck-billed dinosaur
Pachycephalosaurus
The thick-skulled headbutter of the Cretaceous
Therizinosaurus
The scythe lizard with meter-long finger claws
Carnotaurus
A horned predator with comically tiny arms
Iguanodon
One of the first dinosaurs ever identified by science
Saber-Toothed Cat (Smilodon)
The iconic ice-age predator with 28 cm canine teeth
Giant Ground Sloth (Megatherium)
A 6-meter herbivore that could stand on two legs
Irish Elk (Megaloceros)
An extinct deer with antlers spanning 3.65 meters
Passenger Pigeon
From billions to zero in less than a century
Tasmanian Tiger (Thylacine)
A marsupial carnivore that looked like a striped wolf
Dunkleosteus
A 6-meter armored fish with the strongest bite of the Devonian
Great Auk
The original penguin of the Northern Hemisphere
Quagga
A half-striped zebra that vanished in the 1880s
Terror Bird (Phorusrhacidae)
A 3-meter flightless predator that ruled South America
Meganeura (Giant Dragonfly)
A dragonfly with a wingspan wider than a red-tailed hawk