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Top 101 Ferocious prehistoric creatures

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Type of predator
Living period

Liopleurodon - Ferocious aquatic plesiosaur from Jurassic

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Liopleurodon lived during the Mid-Late Jurassic and he was a large predatory marine reptile.
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 (c. 160 to 155 mya). It was the apex predator of the Middle to Late Jurassic seas that covered Europe. The largest species, L. ferox, is estimated to have grown up to 6.39 metres (21.0 ft) in length.


This aquatic reptile was found in a strip of ancient rock running through Oxford, Bedfordshire and Cambridgeshire in England known as the Callovian Clay. Its fossils have also been found in France and Russia.
The Callovian Clay has been preserved for the last 160 million years and contains remnants of numerous other creatures such as marine crocodiles and Ichthyosaurs.
Its remains are found in the Callovian Oxford Clay of Eastern England and Northern France, and date from about 160 million years ago.
It is a pliosaur, one of a family of plesiosaurs which includes larger and smaller relatives, such as Peloneustes, Pliosaurus, Kronosaurus and Brachauchenius.



Estimating the maximum size of Liopleurodon has become a controversial subject.
The palaeontologist L. B. Tarlo suggested that the total body length of a pliosaur (including Liopleurodon) can be estimated from its skull length, and the skull of a pliosaur is typically about one-seventh of the total body length.
The largest known skull belonging to L. ferox is 1.54 metres (5.1 ft) long so according to Tarlo's hypothesis, this specimen would be around 10.5 metres (34 ft) long. 


Liopleurodon skeleton

However, the case of Kronosaurus exposed some uncertainty about the accuracy of Tarlo's suggestion.
New research on pliosaur anatomy revealed that pliosaur skulls were typically about one-fifth of the total body length.
An exceptionally well-preserved skeleton of L. ferox is on display in the Institut und Museum für Geologie und Paläontologie der Universität Tübingen in Germany. This specimen is around 4.5 metres (15 ft) long.
Fossil remains of another specimen identified as L. ferox have been excavated from an Oxford Clay formation near Peterborough and dimension has been estimated to be 6.39 metres (21.0 ft) in length with a skull length of about 1.26 metres (4.1 ft) and is regarded as an adult individual.
An adult L. ferox would have averaged 5–7 metres (16–23 ft) long.

Liopleurodon skeleton skull



Liopleurodon lived in the ocean and seas of the Jurassic with other awesome prehistoric marine animals. Its fossils are restricted to Europe, but it may have been more widespread and Its fossils have also been found in France and Russia.

Liopleurodon would have been a solitary hunter, preying on giant fish, ichthyosaurs,squids and even other plesiosaurs.


Interesting Facts

Name means "Smooth-sided tooth".
Liopleurodon had two pairs of flippers. The rear two were larger, which is different than most plesiosaurs. He may have used the back pair to go forward and the front for turning, braking and surfacing.
Liopleurodon's teeth could reach 12 inches (30.48 cm) long.
4.12 - Is Number of people side by side touching finger tips to match this length (average arm span 1.7 m / 5.58 ft ).
Liopleurodon was pretty slow for such a fierce predator.Estimate average speed 10kph / 6.21mph
Liopleurodon probably would have had good binocular vision making him an adept underwater hunter.

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Sources :
‘Devourer of Gods’- The palaeoecology of the Cretaceous pliosaur Kronosaurus queenslandicus
A dissertation by Colin Richard McHenry B.Sc.(Hons)

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