Supersaurus was a massive plant-eater (herbivore) that lived in the late
154 and 142 million years ago, in North America.
Supersaurus was around 108 feet (33 meters) to 112 feet (34 meters) long,
and probably weighed something in the region of 35 to 40 tons.
While not nearly as heavy as
Supersaurus is one of the longest dinosaurs known.
Supersaurus was discovered by Jim Jensen
At the same time, he also discovered what he believed was a second even
larger dinosaur, which he unofficially named "Ultrasaurus"
(this name was used in some press coverage, but not used in a scientific
However, when Jensen published his official scientific description of this
second larger dinosaur in
he found that the name "Ultrasaurus",
had been already used (and thus had priority) as the name of a different
dinosaur discovered by
Haang Mook Kim in
For a time then, Jensen's second dinosaur then became known as
"Ultrasauros" (note an "o" instead of the final
"u"). Later, however it was found that
Ultrasauros was actually a mix of Supersaurus and
bones. So, today, "Ultrasauros" is considered as a junior synonym
Although "Supersaurus" is the correct scientific name of this genus of dinosaur, the name "Ultrasauros" is also sometimes used.
"Supersaurus" means "super lizard".
Supersaurus was a member of the Saurischia ("lizard-hipped") order of dinosaurs. What this means, is that although Supersaurus was not closely related to lizards, it did have similarly shaped pelvic bones.
Supersaurus was a Sauropod - a member of a group of related large quadrupedal herbivorous (plant-eating) dinosaur with long necks.
Supersaurus lived between about 154 million years ago and 142 million years ago, during the late Jurassic and early Cretaceous periods.
Supersaurus lived in North America.
Supersaurus was a herbivore (plant-eater).
Supersaurus was about 108 (33 meters) to 112 feet (34 meters) long.
Supersaurus weighed about 35 to 40 tons.
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