Top 10 Biggest Dinosaurs Ever Discovered

Dinosaurs were some of the largest creatures to ever walk the Earth. Here is a list of the top 10 biggest dinosaurs, along with details about each one, to help you learn more about these incredible giants.

1. Argentinosaurus

• Length: 98-115 feet (30-35 meters)

• Weight: 88-110 tons (80-100 metric tonnes)

Description: Argentinosaurus is often considered the largest dinosaur ever discovered. This massive sauropod lived during the Late Cretaceous period in what is now Argentina. Its sheer size is estimated from incomplete fossil remains.

2. Patagotitan

• Length: 102 feet (31 meters)

• Weight: 69 tons (62.4 metric tonnes)

Description: Patagotitan, another giant sauropod from Argentina, lived during the Late Cretaceous. This dinosaur is known from several well-preserved specimens, giving scientists a clear picture of its massive size.

3. Dreadnoughtus

• Length: 85 feet (26 meters)

• Weight: 65 tons (59.3 metric tonnes)

Description: Discovered in Argentina, Dreadnoughtus lived during the Late Cretaceous period. It is notable for its exceptionally well-preserved skeleton, providing detailed insights into its enormous size.

4. Supersaurus

• Length: 105-110 feet (32-33.5 meters)

• Weight: 40-50 tons (36.3-45.4 metric tonnes)

Description: Supersaurus is one of the longest dinosaurs known, a diplodocid sauropod from the Late Jurassic of North America. Its length makes it a remarkable specimen among giant dinosaurs.

5. Futalognkosaurus

• Length: 105 feet (32 meters)

• Weight: 50-55 tons (45.4-49.9 metric tonnes)

Description: This titanosaur sauropod was discovered in Argentina and lived during the Late Cretaceous period. Its substantial size adds to the impressive list of gigantic dinosaurs from South America.

6. Maraapunisaurus

• Length: 98-115 feet (30-35 meters) (estimated, based on fragmentary remains)

• Weight: Potentially 100-150 tons (90.7-136.1 metric tonnes) (highly speculative)

Description: Known from very fragmentary remains, Maraapunisaurus's size is highly speculative but potentially immense. It lived during the Late Jurassic period.

7. Puertasaurus

• Length: 98 feet (30 meters)

• Weight: 50-55 tons (45.4-49.9 metric tonnes)

Description: Puertasaurus is another large titanosaur from Argentina that lived during the Late Cretaceous. Its size is estimated from a few bones, making it one of the larger dinosaurs known.

8. Alamosaurus

• Length: 98 feet (30 meters)

• Weight: 72 tons (65.3 metric tonnes)

Description: Alamosaurus, a titanosaur from the Late Cretaceous of North America, was one of the largest dinosaurs from that continent, known for its impressive size and skeletal remains.

9. Sauroposeidon

• Length: 98 feet (30 meters)

• Weight: 55-60 tons (49.9-54.4 metric tonnes)

Description: Known for its extremely long neck, Sauroposeidon lived during the Early Cretaceous period in North America. It is considered one of the tallest dinosaurs ever discovered.

10. Notocolossus

• Length: 85 feet (26 meters)

• Weight: 60 tons (54.4 metric tonnes)

Description: Notocolossus, a large titanosaur from Argentina, lived during the Late Cretaceous. Its well-preserved remains offer valuable insights into the structure and size of these giant creatures.

These enormous dinosaurs represent some of the most fascinating discoveries in paleontology, showcasing the incredible diversity and scale of prehistoric life. Their massive sizes continue to captivate scientists and the public alike, as new discoveries and research provide deeper insights into their lives millions of years ago.