We know that giant dinosaurs lived in the past and now they are extinct. But there are many other huge animals that lived in the past and now they are extinct. Here are some such animals, which were revealed in the studies of scientists while studying the fossils.
Giant Sea Scorpion
Jaekelopterus rhenaniae, giant sea scorpions lived 390 million years ago. The size of giant sea scorpion is said to be equivalent to the size of a large crocodile; it measured 8.2 feet long. Its spiked claw alone was 46cm long. This was considered to be one of the top predators of the time.
This huge shark lived 1.5 million years to 5 million years back. Based on the fossils it is estimated to be 50 feet long and 30 times heavier more than the white sharks. Its teeth alone were 6 inches or longer (they were strong enough to chew a car made with iron) and jaws were around 6 feet wide.
This devil frog lived on this earth 70 million years ago. Based on the fossils found in the Madagascar this frog is estimated to be 41cm long and 4.5 kilograms in weight. With its big mouth and powerful jaws it could kill hatchling dinosaurs.
Titanoboa or titanic boa was the world’s largest snake that lived 60 million years back in Cerrejón region of northern Colombia. With its huge weight of 1,135 kilograms and length of 42 feet (equal to the length of a bus) this animal could crush its prey with its powerful muscles.
Peruvian Giant Penguins
These people-sized penguins lived 36 million years ago in Peru. With their five-foot height and one-foot long beak these penguins used to look fearsome. It is estimated that the walking and swimming style of these animals were also different from the present penguins.
Based on the fossils available in Uruguay these giant rats lived on the earth 4 million years ago. This giant rodent had huge incisors of 30cm long which were useful for fighting and felling trees (it was herbivorous). With its huge weight of 1000kgs and 10 feet length it used to look like hippo and most of times spend its time under water to reduce the stress (caused due to its size).
These giant kangaroos lived on Tasmania Island 40,000 years ago. These creatures measured more than 10 feet long and weighed 500 kilogram. They were extinct due to severe draught.