Compare prehistoric life

Estimated lengths only; this chart does not represent posture or height. Species from different periods may appear together and did not necessarily coexist.

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Attributes for two to four entries (missing values are unknown)
Attribute	DiplodocusDiplodocus carnegiiDIN-000007	BrachiosaurusBrachiosaurus altithoraxDIN-000008
Estimated length	Unknown	Unknown
Height (posture dependent)	Unknown	Unknown
Estimated mass	Unknown	Unknown
Period	Unknown	Unknown
Age (million years ago)	Unknown	Unknown
Discovery region	Unknown	Unknown
Diet	Unknown	Unknown
Classification	Dinosaur	Dinosaur
Quality / sources	See source and review notes in details · Diplodocus · Dippy · How big was Diplodocus carnegii?	See source and review notes in details · A re-evaluation of Brachiosaurus altithorax Riggs 1903 and its generic separation from Giraffatitan brancai

Research-based estimates · Length and height are different measures. Candidate classifications and estimates may remain provisional. Check each source account.

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The Evolution of Giant Dinosaurs: How Did Land Animals Become Almost 40 Metres Long?
Around 100 million years ago, a vast animal moved across a landscape of rivers and vegetation in what is now South America. Its neck reached into a wide feeding space, while its huge body travelled on four column-like legs. A giant sauropod would have looked astonishing even beside the largest animals alive today.

Compare prehistoric life

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The Evolution of Giant Dinosaurs: How Did Land Animals Become Almost 40 Metres Long?