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Hi!
Short Answer: Mamenchisaurus. It has the longer neck and could probably reach higher.
Long Answer: it depends many variables.
For example: how they are posed, the age and size of the animals, how flexible their necks are, and the species in question all effect the answer.
The first species of Mamenchisaurus found, Mamenchisaurus contructus, isn't very large, about 13m long. That said, its neck takes up nearly half its total body length. Even though Diplodocus carnegii is over 25m long they might have been similar in height, assuming they could elevate their necks to a similar degree. It might be that Diplodocus necks weren't as flexible as Mamenchisaurus and therefore Mamenchisaurus would be taller. How flexible sauropod ('the long necks'') necks is a debatable issue.
Generally, the second larger Mamenchisaurus species, Mamenchisaurus hochuanensis, would be taller. It has a neck over 9m long where as Diplodocus carnegii's neck is about 6m long. If the necks were carried elevated, at the same angle, then Mamenchisaurus hochuanensis would most certainly be taller than Diplodocus carnegii.
If Diplodocus reared up onto its hind limbs it might have reach about 12m in height. Because Mamenchisauruscontructus probably had a smaller body than Diplodocus, if it reared then it would be shorter. If Mamenchisaurushochuanensis reared it would certainly be taller simply due to the extreme length of its neck.
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Where are Mamenchisaurus fossils found?
China
How did a diplodocus' anatomy affect their life?
1. Diplodocus was not very fast because of its immense size and weight. 2. The long neck of Diplodocus allowed it to reach tree leaves from a distance. 3. The powerful pelvic girdle of Diplodocus may have allowed it to rear onto its hind legs, and then itself onto its tail, too, to form a tripod. This way, Diplodocus could have reached vegetation very high in the forest canopy. 4. Th whip like tail of Diplodocus could have been used to defend itself against theropod dinosaurs, such as Allosaurus.
Is a Diplodocus a carnivore?
herbivore
What was the adaptation of the diplodocus?
big fat ugly dino.
What are the width and length dimensions of a diplodocus?
Diplodocus was a long-necked whip-tailed dinosaur measuring about 90 feet long with a 26 foot long neck and a 45 foot long tail. It could reach up to 35 115 feet tall, and over 20 ft of that was its neck.
Is diplodocus bigger than brachiosauras?
diplodocus is longer but brachiosauras is taller
What are Mamenchisaurus?
mamenchisaurus are a type of dinosaurs
Which dinosaurs ate pebbles?
Seismosaurus, Diplodocus, Mamenchisaurus, Supersaurus; almost all diplodocid sauropods swallowed pebbles. This was because diplodocids couldn't chew their food, because their only teeth were at the front. They swallowed pebbles to grind up their food in their stomach.
What is the habitat of the mamenchisaurus?
asia
Where are Mamenchisaurus fossils found?
China
How do you spell diplodocus?
That is the correct spelling of "diplodocus" (a large sauropod of the genus Diplodocus).
witch is taller a 2 350 cm tree or a 24m building?
they are equal
What sort of creature is a diplodocus?
it has a long neck
What does not belong Velociraptor Diplodocus Tyrannosaurus Megalosaurus?
Diplodocus does not belong. It was a sauropod and an herbivore. The other three were theropods and were carnivores.
What kind of animal is a diplodocus?
A diplodocus is actually a platypus that lives in the ocean.
Was a diplodocus a herbivore or carnivore?
Most paleontologists think that Diplodocus was a gentle herbivore.
How big was mamenchisaurus?
Male mamenchisaurus sizeWeight: Up to 25 tons (50,000 lbs)Height: 20 ft tall at the shoulder, and 40 ft tall to the headLength: Up to 110 ft longFemale mamenchisaurus sizeWeight: Up to 20 tons (40,000 lbs)Height: 15 ft tall at the shoulder, and 29 ft to the headLength: Up to 90 ft long
