As we all know, prehistoric times were the domain of animals, and they were all enormous super-sized creatures, especially dinosaurs, which were definitely the largest animals in the world at that time. Let's take a look at the ten largest dinosaurs in prehistoric times.

1. Fragile double-cavity dragon
The largest dinosaur
Amphicoelias fragillimus, excavated by fossil collector Oramel Lucas in 1877, is the longest and heaviest dinosaur in history, even larger than a blue whale. It reached a length of 35 meters and was closely related to Diplodocus. Living during the Late Jurassic period, it was distributed in North America, reaching lengths of up to 70 meters and weighing up to 190 tons, equivalent to the combined weight of 40 elephants. Its hip height was 10 meters and its head height was 15 meters.

2. Risperdalon
Second largest dinosaur
Puertasaurus rex is considered one of the largest dinosaurs on Earth. Its chest cavity could fit an elephant, earning it the title of "King of Dinosaurs." It lived in North America during the Cretaceous period, reaching 50 meters in length and weighing up to 110 tons. Its vertebrae were 1.06 meters high and 1.68 meters wide.

3. Argentine Dragon
The third largest dinosaur
Argentinosaurus, belonging to the Titanosaurae family of sauropod dinosaurs, is named after the dinosaur discovered in Argentina. Living during the Middle Cretaceous period, about 100 million years ago, it is one of the largest land dinosaurs discovered to date. Distributed in South America, Argentinosaurus reached lengths of up to 40 meters and weighed up to 90 tons; among all modern creatures, only the blue whale is larger than it.

4. Super Dragon
The fourth largest dinosaur
Supersaurus, also known as Super Lizard, is a species of Diplodocidae dinosaur. Its fossils were discovered in 1972 in the Morrison Formation in Colorado, USA. Living in North America during the Late Jurassic period, it reached lengths of up to 38 meters and weighed up to 60 tons, with a single spine measuring 1.4 meters in length.

5. Poseidon Dragon
The fifth largest dinosaur
Poseidonosaurus, also known as Poseidonosaurus or Poseidonosaurus var., was a herbivorous sauropod dinosaur that lived during the Early Cretaceous period and was closely related to the more famous Brachiosaurus. It inhabited North America, reaching a length of up to 35 meters, a height of 17 meters, and a weight of 55 tons. Only one specimen has been discovered to date, consisting of four cervical vertebrae, found in Oklahoma, USA in 1994.

6. Earthquake Dragon
The sixth largest dinosaur
Seismosaurus, meaning "earth-shaking lizard," was one of the larger herbivorous dinosaurs that lived during the Late Jurassic period. It measured 32 meters in length and weighed 30 tons. Its tail was slightly longer than its neck, and it had a small head. Fossils were discovered in New Mexico in 1979. Its nostrils were located at the front of its snout, but the nasal passages on its skull were located at the top of its head. Its forelimbs were slightly shorter than its hind limbs.

7. Liang Long
The seventh largest dinosaur
Diplodocus, whose skeletal fossils were first discovered by Samuel Wendell Williston, lived in western North America during the Late Jurassic period, dating back 150 to 147 million years. Individuals could exceed 30 meters in length and weigh approximately 10 tons. Their nostrils were located above their eyes. Their necks could not be raised, presumably to increase their surface area for feeding while stationary.

8. Brachiosaurus
The eighth largest dinosaur
Brachiosaurus is a genus of sauropod dinosaur that lived during the Late Jurassic period. Its forelimbs were much larger than its hindlimbs. Brachiosaurus was one of the largest animals that ever lived on land, measuring about 25 meters in length, 13 meters in height, and weighing up to 40 tons.

9. Bewitching Dragon
Ninth largest dinosaur
Apatosaurs, also known as Brontosaurus, belong to the genus Apatosaurus in the family Diplodocidae, including Apatosaurus ajax and Apatosaurus louisae. Weighing up to 30 tons, based on newly discovered femur bones in Argentina, they were 4-5.5 meters tall and approximately 35 meters long. They lived during the Late Jurassic period and were distributed across the Americas.

10. Mamenchisaurus
The tenth largest dinosaur
One of the largest sauropod dinosaurs discovered in China, its fossils were found at the Mamingxi ferry crossing in Yibin City. Scientific identification has confirmed it belongs to the order Sauropoda, specifically the order Epsilon. This genus of animal measured approximately 22 meters in length and nearly 7 meters in height. It lived during the Late Jurassic period and was distributed throughout Asia.