14 creepy prehistoric monsters whose remains were found in different parts of the world (15 photos)
The images below clearly show that dinosaurs may have done us a huge favor by ending their existence on Earth. Looking at their remains, it's hard to imagine how we would have gotten along together. 
Melville's Leviathan - An Ancient Cetacean Creature 
ReturntoPleistocene/ SeriesOfAdjectives
When it lived: 9.9-8.9 million years ago
Deinosuchus - an alligator-like crocodile that weighed over 8.5 tons 
fwzain/ SeriesOfAdjectives
When it lived: 80-73 million years ago
Spinosaurus - a water-dwelling spiny lizard 
Anubisgod123/ aquilasr
When it lived: 112-93.5 million years ago
Giant ichthyosaur 
Alamy/ aquilasr
When it lived: 90 million years ago
Liopleurodon is a formidable predator and an excellent swimmer 
OkMeasurement420/ Sumeriandemon
When lived: 160-155 million years ago
Argentinosaurus is one of the largest dinosaurs that ever lived in South America 
MoRbidanGeL23/ reddit
When lived: 99.6-89.8 million years ago
Basilosaurus - an ancient whale 
Lythronax/ Ernesto Benavides
When it lived: 45-36 million years ago
Utahraptor - a dinosaur that was probably covered in feathers 
Dromeus/ Mophandel
When it lived: 130-125 million years ago
Arthropleura - a giant centipede 
soursh/ KimCureAll
When it lived: 314.6-290.1 million years ago Scientists decided to make a life-size model of a centipede to see what it would look like in real life.
Ammonite is a giant invertebrate mollusk 
Natural History Museum/ EternalPermabulk
When it lived: About 65 million years ago
Tyrannosaurus rex is a carnivorous theropod dinosaur from the tyrannosaurid family 
BBC News/ De_fau_lt
When lived: about 96 million years ago
Glyptodon weighed up to 2 tons and reached almost 3 meters 
SpectrumDT/ Peachy-Persimmons
When lived: 15.5-0.012 million years ago
Triceratops - a horned giant weighing more than 10 tons 
CyberneticDinosaur/ levi2207
When lived: 68-66 million years ago
Titanoboa - a giant snake, was a close relative of the boa constrictor 
homosapiensx/ Ryunysus
When lived: 61.7-58.7 million years ago
