
Mamenchisaurus, a Huge Sauropod
Mamenchisaurus is an incredibly large sauropod of the late Jurassic period. One of the most notable features of this herbivorous beast is it’s amazingly long neck. Researchers state that the neck of this dinosaur made up more than half of its total length! The recognition of dinosaur with the longest neck is competed between Mamenchisaurus and Supersaurus. Discovered in China, this gentle giant is now known by six species and there may be many more. So large is this long neck that its largest rib measures in at over 13 feet! Let’s take a look at some more numbers on this incredible vegetarian.
The Numbers On Mamenchisaurus!

Mamenchisaurus Length
The approximated length of Mamenchisaurus is around 69 ft feet long.
An average length of around 69 feet is equal to:
The length of five black rhinoceros.
The length of four giraffes.
Approximately the length of 6 average Nile crocodiles.
…and just for fun: equal to the length of 2,097 sugar ants.
Mamenchisaurus Weight
Estimates of Mamenchisaurus weight fall at around 30 short tons or 60,000 lbs.
60,000 lbs is equal to:
The weight of approximately 173 ostriches.
The same weight as 600 emperor penguins.
The approximate weight of 6,000 flamingos.
…and just for fun: equal to the weight of 48,000,000 average goose feathers.
Mamenchisaurus Height
Current estimates put the height of Mamenchisaurus at around 35 feet tall.
35 feet is equal to:
The approximate height of six hippopotamus.
The height of nine Bengal tigers.
The height of ten Malayan tapirs.
…and just for fun: equal to the height of 6,883 pennies stacked on top of each other.
This may have been an herbivorous dinosaur but with such sheer size on its side, this incredible sauropod had very few predators to worry about! Can you imagine being underfoot with a herd of Mamenchisaurus around?