Top 10 Biggest Water Dinosaurs Ever ln History

The ocean is certainly a scary place where giant sharks, whales, squids, barracuda, and numerous other marine creatures are. From ancient times to the present, danger may never stop in the dark deep sea. Monstrous sharks, hyper carnivorous whales, sea lizards, crocodiles, marine dinosaurs, and several others roamed the seas. Let’s take a look at the 10 biggest water dinosaurs ever discovered in human history and prehistory.

1. Spinosaurus

Spinosaurus is discovered only a few years after the Tyrannosaurus. The length of the spinosaurus is said to be 16 to 19 meters(52feet to 62feet) long. Its fossils had been destroyed during World War II when an Allied bombing raid took occurred in Munich. Most paleontologists believe that it used its long jaws for hunting its prey. Spinosaurus was almost forgotten until Jurassic Park III and Jurassic World revived it to fame. A showdown in the movie saw the Spinosaurus killing a Tyrannosaurus.

Spinosaurus

animatronic Spinosaurus dinosaur
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2. Shastasaurus

Shastasaurus is the largest marine creature ever discovered in archaeology. A variety of ichthyosaur, Shastasaurus reached up to 19.8 meters(65 feet) long. Dating back to the mid and late Triassic period, this largest sea creature wasn’t a terrifying predator and mainly consumed fish being an adept suction feeder.

Shastasaurus

3. Mosasaurus

One of the largest sea predators to have ever lived, Mosasaurus reached 15.2 meters (50 feet) long. It existed during the late Cretaceous period that is about 70-66 million years ago. Featured in Jurassic World, Mosasaurus used its hundreds of razor-sharp teeth for killing its prey.

Mosasaurus

Mosasaurus skeleton

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4. Tylosaurus

Tylosaurus was a Mosasaur species with a massive size of about 15.2 meters(50 feet) long. A large carnivorous predatory sea lizard, Tylosaurus was closely related to modern monitor lizards and to snakes. The fossil remains of its stomach show signs of fish, sharks, smaller mosasaurs, plesiosaurs, and even some flightless birds. They are known to have existed during the Late Cretaceous in the sea of North America.

Tylosaurus

Tylosaurus Skeleton 1

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5. Basilosaurus

Basilosaurus was a huge cetacean that lived 34-40 million years ago during the Late Eocene era. A genus of early whales, it had a long, slender, and sinuous body with vestigial limbs. Its first fossil was found in the United States in the early 1990s. They were around 15.2 to 26 meters(50 feet to 85 feet) long.

Basilosaurus

Basilosaurus skeleton
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6. Megalodons

Megalodons were mighty shark species that lived around 2.6-23 million years back during the Cenozoic Era. It is deemed as one of the largest and most formidable predators in the history of vertebrates. According to scientists, Megalodon was the brawny version of the great white shark. It reached a length of 18 meters(59 feet)long and it had a worldwide distribution. Even though extinct, many Megalodon sightings have been reported for a long time.

Megalodons

Megalodon shark jaw 1
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7. Kronosaurus

The 9 to 12 meters(30 to 34 feet) long Kronosaurus was a short-necked pliosaur that lived in the Early Cretaceous epoch. It had a 2.7 meters(9 feet) long head and the longest tooth in its large mouth was 28 centimeters(11 inch)long. It was named after the supreme god and leader of Greek Titans Cronus. Its fossil remains were obtained from Queensland in Australia and from the Paja Formation in Boyacá, Colombia.

Kronosaurus

kronosaurus head 2
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8. Nothosaurus

Nothosaurus was a nearly 4 meters(13 feet) long sauropterygian reptile dating back to the Triassic period that was about 240-210 million years ago. Its fossils are widely distributed from North Africa to Europe to China. The massive mouth with sharp, outward-pointing teeth suggests that it preyed mostly on squid and fish. Being an ambush predator, it sneakily attacked the prey with its sleek reptilian stature.

Nothosaurus

9. Dakosaurus

Dakosaurus was one of the giant marine predators during the Jurassic period that was found in Germany for the first time. Having an unusual reptilian-cum-fishy body, scientists regard it as an apex predator because of its extraordinary jagged teeth. Commonly pitted against modern crocs and gators, Dakosaurus was nearly 5 meters(16 feet) long.

Dakosaurus

10. Plesiosaurus

Resembling the Loch Ness Monster, Plesiosaurus was a 3.4 meters(11 feet) long sauropterygian reptile that is known to have existed during the early Jurassic Period. It has a small head, long lean neck, broad turtle-like body, a short tail, and four elongated paddles. Its almost complete skeletons were discovered from the Lias of England. Even though these creatures are known to be extinct now, several sightings are reported every year.

Plesiosaurus

plesiosaur skeleton

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