Whatever lives in the sea nowadays can't be compared with the huge monsters that dominated the depths millions of years ago. And by “monsters” we mean long-extinct marine reptiles and dinosaurs. Since many people are better acquainted with the land-roaming giants of the past, this video will open your eyes to those that ruled the waters!

Did you know, for example, that pliosauruses were real giants, with the largest species weighing more than 30 tons and growing up to 40 feet long? Also, this animal had an incredibly strong bite. In fact, it was four times more powerful than that of the mighty T-rex!

TIMESTAMPS:

Pliosaurus 1:14

Kronosaurus 2:15

Nothosaurus 3:07

Styxosaurus 4:10

Albertonectes 5:15

Thalassomedon 6:16

Tylosaurus 7:23

Shonisaurus 8:07

Mosasaurus 9:00

Shastasaurus 9:53

#dinosaurs #prehistoricanimals #seacreatures

Music by Epidemic Sound https://www.epidemicsound.com/

SUMMARY:

- The largest Kronosaurus ever found was 34 feet long from snout to tail and likely weighed about 12 tons. This marine reptile’s teeth weren't really deadly; they were only a few inches long and not all that sharp.

- . Some experts state that Nothosauruses could snap their long heads sideways to catch a passing fish, kinda like how a crocodile does. Surprisingly, researchers say that these reptiles shared a lot of similar features with the modern sea lion.

- The Styxosaurus belonged to the Plesiosaur family and lived during the Late Cretaceous Period, around 85 to 70 million years ago. Styxosauruses were about 35 feet in length, but over 16 feet of that consisted just of their long snake-like neck! They had a comparatively small body and weighed approximately 4 tons.

- The Albertonectes was another representative of the Plesiosaur family, meaning that this marine reptile had a small head on an incredibly long neck and large flipper-like limbs that helped it move through the water. These creatures occupied the seas around North America 76 to 70 million years ago.

- Thalassomedon means “sea lord” in ancient Greek, and there's a pretty good reason behind this name. These representatives of the Plesiosaur family were huge creatures that could reach 40 feet in length. That’s about as big as 4-story building!

- The Tylosaurus belonged to the Mosasaur family. It dominated the shallow seas of North America about 85 to 80 million years ago. This was an enormous creature, with the biggest representatives reaching 45 feet in length.

- The Shonisaurus lived on our planet during the Late Triassic Period, approximately 215 million years ago. The remains of this creature were first discovered in Nevada in 1920, not far from the Shoshone Mountains. This prehistoric reptile resembled a huge chubby dolphin.

- The Mosasaurus is a truly gigantic creature that dominated the seas all over the world about 66 million years ago. According to fossil evidence, some specimens could be more than 50 feet in length. This fact makes the Mosasaurus the biggest marine carnivore of its time.

- The Shastasaurus is the biggest marine reptile that has ever existed. These creatures lived during the Late Triassic Period about 210 million years ago.

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