Top 10 Deadliest Prehistoric Animals

This includes animals that lived after the dinosaurs, not dinosaurs and megalodon. This list is awesome.

The Top Ten

1 Megalodon Megalodon The megalodon is an extinct species of shark which was about 59 feet (18 meters) long and hunted in the seas until about 1.5 million years ago. It was similar to today's great white shark-but three times longer and 20 times heavier. more.

I hope this not real that will be very scary to swim in the ocean with this
in the waters today.


This is the biggest shark ever that ever existing this is the best on ever


2 Saber-Toothed Cat

Meow... the last thing Entelodont hear before their organs are clawed out on the floor.

Diego in ice age - Ajkloth

Nah. If only you people watched ice age. They are very friendly creatures

These cats would kill anything that comes near them

3 Titanoboa

If it can meet megalodon,it will crush him!

He should be #2
he wayyy too powerful to be #3

Same size as a sarcosuchus could kill it, it can swim in waters, it could probably eat a saber tooth in one gulp and he is 40 feet long (12 metres) 400 pounds (181.437 kilo grams) I think he should be in 2 place

40 foot long constrictor. 400 pounds per square inch of pressure. Equivalent to being squished with the weight of 3 Eiffel Towers

4 Spinosaurus Spinosaurus Spinosaurus is a genus of theropod dinosaur that lived in what now is North Africa, during the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago.

The Tyrannosaurus would easily defeat the Spinosaurus, many are denying this because the of the inaccurate movie Jurassic Park III.

Some might say its bigger so it will win, put yourself in a room with a Black Mamba, if you say well the Black Mamba is more powerful so obviously it will win your correct, so stfu about "its bigger so it will win"

The teeth of a Spinosaurus weren't made to tear off flesh, instead it was meant for fishing, meanwhile the teeth of an Tyrannosaurus were adapted for crushing bones and tearing off flesh.

Tyrannosaur bite force was between 7000 to 13000 PSI while the Spinosaurus was far less(I checked many sources but they were all different but less than a Tyrannosaurus)

The prey of the Spinosaurus were fish.

The Tyrannosaurus hunted far more dangerous dinosaurs such as the Ankylosaurs, Triceratops, and more.

If you still think the Spinosaurus would win, you are brainwashed by Jurassic Park III - Apoc

I was gonna chose megalodon, but Spinosaurus is my favorite dinosaur. - TerryThebestsoccerplayer

How is Smilodon more powerful than it? It could squish it without knowing!

Get this thing in first place... NOW! Here are some reasons the first3 shouldn't be there. #1: Megalodon was as big as a bus and had the deadliest bite force of all. It was so big, it was really slow! Plus, it only fed on whales, so it wasn't a huge threat to other marine animals. #2: Saber-Toothed Cat isn't even its real name! Smilodon wasn't even that big anyway. Its mouth didn't open wide enough to use its big fangs, either. #3: Titanoboa was a constrictor, not venomous, and predators to big could just step on it when it was wrapping itself around them. The Spinosaurus was the fastest of the first 4, and the biggest. This dinosaur could hunt in water as well as on land, so it could follow pretty much everything pretty much everywhere. The sail helped it to stay active and to stay at a good temperature.

5 Tyrannosaurus Tyrannosaurus Tyrannosaurus, meaning "tyrant lizard", from the Ancient Greek tyrannos, "tyrant", and sauros, "lizard" is a genus of coelurosaurian theropod dinosaur. It also had a tremendous bite force, the strongest of any Dinosaur and living terrestrial animal. Its bite force reached up to 12,800 pounds (roughly more.

It has the strongest bite force any animal on earth,it's smart,and it's fast

Why is this not number one? Doesn't his name mean tyrant lizard king?

One big, bad dinosaur.

He's pretty awesome, but not nearly as strong as megalodon

6 Woolly Mammoth

Well try to go fight it yo self.

This guy was so powerful he could own most predators

This dumbass mammal shouldn't even be on the list it was a slow ass elephant that got its ass stuck in tar pit for 90 percent of the population

7 Andrewsarchus

The Andrewsarchus and Mesonychid look VERY similar. - PhoenixAura81

It’s dangerous because it is like a Saber toothed tiger
? - Carly19781

Biggest predator that was mammalian, ever. It was related to sheep and looked like a warg.

Andrewsarchus could crush bone it should be in 1st place for strongest bite

8 Liopleurodon Liopleurodon Liopleurodon is a genus of large, carnivorous marine reptile belonging to the Pliosauroidea, a clade of short-necked plesiosaurs. The two species of Liopleurodon lived during the Callovian stage of the Middle Jurassic Period.

He should be 1

Liopleurodon should definitely be 1 it was probably the biggest and most powerful preditor ever

Liopleurodon was nearly 3 times the size of the " killer t rex" it could kill megalodon due to superior bite force maneuverability and non independence from salt water and the restriction of slowing down consistently wasting energy and the fact that Megalodon was wiped out because the ocean got colder while liopleurorodon overhunted the prey they had which in my opinon is a pretty bad-ass way to die

Predator X can't beat the megalodon!

9 Mosasaur

Why is the stupid shark the top sea predator? It's not even that big! Sure it could swallow you whole, but that's because of its mouth shape. Mosasaurus is faster an would intentionally swallow sharks whole!

And over 36 teeth on each row

The mosasaur can grow to 17m long and can kill sharks. I believe it is one of the deadiliest.

10 Megatherium

This thing is dead because us man...

Nothing took him down since t-rex my favourite guy look at those claws on Google!

Okay first of all you science buff the giagantic sloth you call cool couldn't even run faster than a shamble and the fact that rearing on its back legs could cause pre -arthritis rendering those cool claws useless. Basically it was a large clawed horse

The Contenders

11 Arctodus

Arctodus or shot faced near was definitely the most fearsome predator of the Pleistocene epoch period

Short-faced bears. - PhoenixAura81

Speed bite force size strength

This had a bite force of 2500 pound per square inch

12 Deinotherium

They would be more higher and powerful in the list if they had there tusks facing the way elaphants ones do

13 Deinosuchus Deinosuchus Deinosuchus is an extinct genus related to the alligator that lived 80 to 73 million years ago, during the late Cretaceous period.

These animals eat large dinosaurs. ENOUGH SAID! - PhoenixAura81

I think that Deinosuchus is probably the second coolest thing that ever lived after Aegisuchus.

2 times the length of todays largest crocodiles, at least 10 times the weight and a powerful jaw strength ripping through steel. It had razor sharp teeth and can outsmart anything that tries to take a drink in its lake. (including t. rex and spinosaurus. Just search sarcosuchus or dienosuchus vs. Spino and see who the winner is. A Deinosuchus bite is far more deadly than a T. rex. Getting bitten by this beast is equal to stabbing 250 sharp pieces of glass into yourself. Its that OP


14 Entelodont

Awesome canines, awesome fighting skills, strongest mammilian bite force ever! 2.1 metres tall! Terminator pigs uber deadly!

Legendary. Seriously, a saber toothed cat had no chance. My favourite animal.

Could bite through a Buick

Excuse me, they can own a saber toothed cat any day, these are twice as big. smilidon... give me a break

1 Comment
15 Sarcosuchus

Excuse me but how is this guy seventeenth?! He could easily kill a T.Rex

He was the largest crocodile ever.

16 Megalania

This lizard was in essence, a 30 foot long monster that prowled the Australian Outback 40 000 years ago, and would truly have been your worst nightmare if you came across one. Even its name, translates into the latino meaning, "Ancient Giant Butcher/Ripper". It was made all of pure solid muscle, a rapacious demon with curved fangs possibly fostering deadly venom used to dispatch victims with a single bite. Even if the victim, typically a giant kangaroo Procoptodon or the wombat Diprotodon got away, they would soon fall to shock induced blood loss, and die later, leaving a tasty corpse for the monitor to find, a lot like today's Komodo Dragon. Even real dragon wyrms which breathed fire would have thought twice before coming across a reptile this size, if they lived in prehistoric Australia. However, as was the case with other reptiles, like a running Game Of Thrones sized real life lizard lion known as Quinkana Fortirostrum and its relative Pallimnarchus, and the serpent Wonambi ...more

17 Hyaenodon

Love this animal

One of the deadliest mammals ever to have lived

Could run 35 mph and had a jaw power at over 1000 PSI

Super deadly giant beasts

18 Cave Lion Cave Lion

Teeth claws stamina speed

It fought with short face bears and dire wolfs.

The cave lion ( American Lion) was the largest true feline ever to exist. Although Smilodon was slightly heavier, smilodon wasn't a true cat. If the cave lion existed today, it would be my favorite animal. It had a bite force of over 1600 psi( pounds per square- inch). It could grow up to 12 feet in length, 5 feet in height, and weigh over 930 lbs. It could withstand high pressure on its head. Its greatest competitor was the short- faced bear( arctodus simus) a very close cousin of the the modern- day spectacled bear. To learn more about the bear and the cave lion, you can watch : Jurassic Fight Club- Ice Age Monsters.

I think this was one of the biggest cats ever sorry if I'm wrong I pretty much only study smilodons

19 Gigantopithecus
20 American Lion
21 Short-Faced Bear

That's basically the arctodus. - PhoenixAura81

Biggest bear that ever lived

22 Livyatan Melvillei

How in the world is this Livyatan 26th, now get this thing 2nd

Most Powerful sea creature ever. Better than Megalodon and smarter too

The only predator that can take on Megalodon. With 13 inch teeth and massive bite.

23 Gastornis

Slicing beak and claws speed and size

24 Dire Wolf

How in the world is dire wolf stronger than Dunkleosteus

25 Sarkastodon

It is hyaenodon far relative

26 Indricotherium

It can trample predators

27 Dunkleosteus

Could kill t-rex with one bite. Also, Megolodon has the biggest teeth ever

Dunkleosteus was one of the first super predators in my opinion. It lived in the Devonian. It was a twenty - foot fish that did not have teeth, but scary looking plates. It looks goofy, but yet scary.

It's bite force was absolutely insane! - killerqueen1010

28 Hatzegopteryx Hatzegopteryx Hatzegopteryx is a genus of azhdarchid pterosaur found in the late Maastrichtian deposits of the Densuș Ciula Formation, an outcropping in Transylvania, Romania.

Oh man. I think it is scarier than Quetzalcoatlus. Due to having a robust skull twice as wide as Quetzalcoatlus.

29 Phorusrhacos
30 Pterodactyl Pterodactyl


31 Velociraptor Velociraptor Velociraptor is a genus of dromaeosaurid theropod dinosaur that lived approximately 75 to 71 million years ago during the later part of the Cretaceous Period.

They are worse than a t-rex the hunt in groups and kill there prey easily

32 Anomalocaris Anomalocaris

While they may not seem like much, their mouths could do some serious damage to the hard exoskeletons of most creatures in the cambrian

33 Thylacoleo
34 Basilosaurus

It was the largest whale that ever lived and was a killer so it deserves to be on this list

35 Helicoprion

Not only a good predator but it had unique saw shaped lower jaw making it easy to shred prey. It's "whorlteeth" was probably it's most notable feature.

This creature looks like a shark except it has a buzzsaw-like mouth. - PhoenixAura81

36 Mosasaurus Mosasaurus

Hello this thing is terrifying it should be1

Big and strong and eats dinosaurs easily. Lockey

37 Orthocone

These cephlapods were big carnivores and ate sea scorpions and other marine arthropods. They were huge as hell too!

38 Megistotherium
39 Bear-dog (Amphicyon)

The power and grappling dexterity of a bear, the aggression and jaws of a wolf, the agility and body shape of a lion. This predator was bigger than sabre-tooth, more maneuverable than the short faced bear and out-competed Entelodont and Hyaenodon to extinction!

40 Arctotherium

Another short-faced bear species. Lived in South America and was as tall as a grown man. - PhoenixAura81

41 Elasmotherium
42 Argentavis
43 Kelenken
44 Dinofelis

Let me guess, it's a very large prehistoric feline. Or a feline with reptilian traits.
Reality: It IS a feline, just not dinosaur sized and had no reptilian traits. Just related to smilodons (saber-toothed tiger). - PhoenixAura81

Preyed on, our early ancestors

45 Phorusrhacidae
46 Dimetrodon

It may look like a big lizard, but it's actually a proto mammal.

47 Epicyon

Epicyon was a very large dog

48 Aegisuchus

Competitor for the biggest crocodile and in my opinion not much people know him

49 Sea Scorpion (Eurypterid)

A great Devonian predator that nobody has heard of. It looks really cool, though. Google it! - SigmaV84

50 Purussaurus Purussaurus An alligator is a crocodilian in the genus Alligator of the family Alligatoridae. The two living species are the American alligator and the Chinese alligator. Additionally, several extinct species of alligator are known from fossil remains.
8Load More
PSearch List

Related Lists

Top 10 Deadliest Prehistoric Sea Monsters Top 10 Coolest Prehistoric Animal Top 10 Most Powerful Prehistoric Animals ElSherlock's Favorite Prehistoric Animals Top 10 Dinosaur (And Prehistoric Animals) Matchups

List Stats

500 votes
53 listings
8 years, 92 days old

Top Remixes (7)

1. Megalodon
2. Titanoboa
3. Deinotherium
1. Megalodon
2. Andrewsarchus
3. Saber-Toothed Cat
1. Megalodon
2. Titanoboa
3. Mosasaur

View All 7

Error Reporting

See a factual error in these listings? Report it here.