what is the longest and tallest dinosaur??

Answer 1

Going simply by actual, full, complete skeletons, the longest dinosaur known is still Diplodocus, a long, thin type of sauropod dinosaur from the Jurassic that measured about 27 metres (92 feet) in length.

However, there are remains of other dinosaurs that are incomplete that indicate that they may have actually been longer than than Diplodocus.

The remains of Seismosaurus indicate that it was closely related to Diplodocus, and likely had a very similar body structure. The size of the vertebrae, pelvis and ribs that have been found of this critter indicate that it was much larger than Diplodocus though, and if the proportion of sizes remains true for the rest of the body, it was likely somewhere between 40 and 50 metres in length - nearly twice the length of Diplodocus.

Some very fragmentary remains of another critter, tentatively called Bruhathkayosaurus indicate that it may have extraordinarily massive. If it was in fact a Titanosaur as the remains suggest, it may have been upwards of 45 metres long, and around 200 tons, which would make it one of the longest dinosaurs known, and also the most massive - larger even than the recently described Argentinosaurus which currently holds the 'record' as the largest dinosaur. However this size estimate requires a lot of extrapolation from just pieces of skeletons, and may turn out to be overstated.

Answer 2

The longest complete skeletons are of Diplodocus typically 87.5 feet or so. The tallest complete skeletons are of Brachiosaurus that is over 40 feet with neck lifted. This is also the heaviest dinosaur. Edwin H. Colbert estimated the dipodocus as 11.6 tons or so and brachiosaur as 87.8 tons. Other scientists have different estimates. Individual bones larger than corresponding ones of the two animals listed have been found. Such creatures have been dubbed Supersaurus, Ultrasaurus, Seismosaurus, etc. I'll wait and see about such matters.

Answer 3

There was more oxygen in the air therefore, plants and animals were larger. Telling how long dinosaurs lived is tricky though. One way scientists determine the age of dinosaurs is by looking at a cross section of their bones since it's very much like a tree trunk cross section with which you can calculate their age. Most rarely lived past 100 years. Generally speaking, the range was anywhere between 7 to 100 years depending on the dinosaur.

Answer 4

I believe you mean "was the longest and tallest dinosaur"...and the answer is the Lickalottapuss.

Answer 5

Brachiosaurus 50 ft tall 85 ft long
50 tons

Answer 6

brontosaurus

Answer 7

who can tell???