largest dinosaur existed?

Answer 1

Argentinosaurus is the largest which has been well constructed from fossils, and paelontologists estimate that full-grown specimens reached some 35 metres (115 feet)in length. (according to wikipedia - Science Daily quoted it at 40 m)

Weight was perhaps 80 to 100 tonnes. It is the largest dinosaur that we have good evidence for.

However, it would be smaller than Bruhathkayosaurus, which may have reached 44 metres (145 feet) long and weighed 180 tons and the poorly known Amphicoelias fragilmmus which may have been up to 60 meters (200 feet) long. However, these estimates cannot be validated due to lack of evidence.

BTW, Brontosaurus is properly known as Apatosaurus.
Gigantosaurus is what's known as a 'wastebasket taxon'; a grouping for titanosaurs who didn't fit elsewhere. Giganotosaurus was the largest Allosaurid, a type of meat-eating dinosaur.

Answer 2

Brontosaurus is NOT brachysauras! Brontosaurus was later found to be APATOSAURUS (they had put the wrong skull onto the skeleton)! Sauroposeidon (and even diplodocus!) were far larger than these sauropods. Further, Tyrannosaurus rex was tiny compared to Gigantosaurus. Sauropods were generally larger than therapods.
This topic is hotly debated amongst palaeontologists, fueled by the fact that many fossils found are incomplete so there is much speculation as to what would be the "largest". Here are some that are in the "headlines": Patagonian dinosaur (found in Patagonia, yet unamed) which is speculated to be 26 feet longer than the Argentinosaurus, found in the same region (which is another one on the hit list as largest dino); Riodeva dinosaur (yet unamed) has the largest humerus found; Seismosaurus was possibly the longest and tallest dinosaur. It also depends on what "largest" is classified as - if it is determined by weight, then the Patagonian dino is in the running, but if largest is determined by height and length, then so far it seems to be aimed towards the Seismosaurus. With palaeontologists unearthing, analysing and understanding more fossils, we will find more debate into who holds which records.

Answer 3

Sauroposeidon, which means "earthquake god lizard".

This colossus weighed 60 tonnes and stood 18 meters (60 feet) tall and was arguably the largest creature to walk the earth.

Sauroposeidon lived about 110 million years ago.

At that time, Sauroposeidon inhabited the delta of a massive river system. The Gulf of Mexico had swamped most of Texas, bringing the shoreline to Oklahoma.

The findings were published in the March 2000 issue of the Journal of Vertebrate Paleontology.

Answer 4

As a sauropod, Bruhathkayosaurus is estimated to have reached 40 m (130 ft) or 44.1 m (145 ft) in length, 14 m (46 ft) in height, and to have weighed from 175 to 220 t (190 to 240 tons). By comparison, Argentinosaurus is estimated to have reached 34.6 m (114 ft) in length, and to have weighed from 80 to 100 t (90 to 110 tons). Another huge titanosaurid, Paralititan, was probably 31.9 m (105 ft) long, and weighed 65 to 80 t (72 to 88 tons).

Answer 5

Gigantosaurus is the largest ever recorded. It was about 3 times larger than T-rex.

Answer 6

Yomommasaurus Rex. She weighs in at 300 tons, and 200 feet wide.

Answer 7

Brachiosaurus

Answer 8

Brachiosaurus?
Liopleurodon?
Watch Walking With Dinosaurs, if you can

Answer 9

the Ultrasaurus.

It was absolutley massive. I believe that the names ultrasuarus and supersaurus are given to the same dinosaurs i.e. its the same thing

Answer 10

On the BBC website, there are two conflicting stories. The latest one is the first link:

http://news.bbc.co.uk/1/hi/world/europe/3490626.stm
http://news.bbc.co.uk/1/hi/sci/tech/503682.stm