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The LARGEST dinosaur to ever Live is The Agentinosaurus.. The LONGEST dinosaur to ever live is the Seismosaurus....... this is all true facts here im the dino expert!!!!

BY: Hobknocker360 \=/ \=/

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Amphicoelias was the largest dinosaur, at 125 tons

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12y ago
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tarbosaurus

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3y ago
no the longest dinosaurs were amphicoelias and barosaurus
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13y ago

The Ichtyosthega I think the T-Rex Demuniacx's Answer: The T-rex was in the upper/late cretactuos period.In the carbiniferous period which was about a couple million years between both periods has the answer to the first dinosaur. The Arthropleura.
Well the oldest dinosaurs would have first appeared in the Triassic period 230 million years ago. I looked this up and this is what I found in my own words: One of the oldest is Eoraptor. although it is old their were some advanced skeletal feature's so there could be older ones.

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13y ago

The first dinosaur was Herrerasaurus and it lived 228 million years ago.

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Q: What is the largest dinosaur that has ever lived?
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Related questions

What is the largest dinosaur ever to live?

the largest dinosaur that ever lived is the seismosaurus hallorum


What is the largest animal tthat ever lived?

Dinosaur


What is the largest carnivorous dinosaur that ever lived on earth?

The largest carnivorous dinosaur that ever lived on earth was "Giganotosaurus." The largest is "liopleurodon." The largest carnivores ever lived on earth are- 1) Spinosaurus aegiptiacus 2) Gigantosaurus carolini 3) Tyrannosaurus rex The largest of all definitely is "liopleurodon"


What is the name of the largest dinosaur?

The most tallest and strongest plant eating dinosaur was the Argentinosaurus. It was believed to be the largest land animal which had ever lived.


What is Argentinosaurus?

Simply one of the largest Dinosaur that ever lived but without a complete set of bones


Is the apatosaurus a dinosaur?

Yes, the Apatosaurus is a sauropod dinosaur. Sauropods were herbivorous, lizard hipped, quadrupedal dinosaurs with long necks. Sauropods were the largest dinosaurs ever to exist, and the largest sauropods are the largest animals to have ever lived on land.


What were the smallest and biggest dinosaurs?

the smallest dinosaur ever discovered so far is the compsongnathus this animal lived in the Jurassic period and the largest dinosaur ever discovered is argentinosaurus it weight 100 tons!!!!


Biggest carnivore dinosaur?

The spinosaurus was the largest carniverous dinosaur. It is called spinosaurus because of the fin on its bag. This dinosaur was a water dwelling dinosaur that was hunted by the largest crocodile that ever lived.


Most unusual dinosaur that ever lived?

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What was the first meat-eating dinosaur that ever lived?

The earliest carnivorous dinosaur known is Eoraptor.


Where was the largest ever dinosaur bone found?

the the largest bone was found Aiaustrailla.


What is the largest lining species of mammal?

It is the blue whale. This mammal is also the largest animal that has EVER lived in the history of Earth. Yes, These creatures are indeed larger than I any Dinosaur that ever lived!A blue whale has an average length of 80 feet and a weight of 120 tons!