The Top 5 Largest Known Dinosaurs

  Dinosaur Length Weight
(metric tonnes)
Period
1 Amphicoelias 40 to 60 metres 100-122 mt Late Jurassic
(155-145 million years ago)
2 Argentinosaurus 30 to 36 metres 80-100 mt Late Cretaceous
(80 million years ago)
3 Supersaurus 33 to 34 metres 35-40 mt Late Jurassic
(155-145 million years ago)
4 Sauroposeidon 28 to 34 metres 50-60 mt Middle Cretaceous
(110 million years ago)
5 Futalognkosaurus 28 to 34 metres 50-75 mt Late Cretaceous
(80 million years ago)
Tags: Animals & Nature, Top 5 Largest

Sources:  Top 5 of Anything.com research 2012: Carpenter, Kenneth (2006).

List Notes: Please note: this list is ranked by length. Weight estimates for dinosaurs are more variable than length estimates and thus less accurate. Various complicated methods for estimating size and weight, based on skeletons are usually incomplete.
Largest Known Dinosaurs
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