Amphicoelias fragillimus.
56 ft (17m)
Assuming it existed, Amphicoelias fragillimus would have been a diplodocid sauropod, and therefore a specialized herbivore.
about 150 million years ago in the late Jurassic period
AMPHICOELIAS
Its Amphicoelias Pronounciation: Am - fee - co - eee - lee - yas Size: 790 tonnes 200 feet
Not that we know of. A. Fragillimus was well over 196 feet long, even the longest animal living today, the blue whale, is only about 113 feet long.
Seismosaurus was 84-90 feet tall. It was also 120-200 feet long. It is the 2nd largest and tallest dinosaur coming after its cousin, amphicoelias fragillimus.
The longest sauropod discovered so far is a sauropod called amphicoelias fragillimus. Scientist estimates that A. fragillimus was nearly 60 meters long, although scientists have only found one incomplete backbone and some of the fossils were lost after being studied.
There are many folkloristic legends about it, however,the dinosaur Amphicoelias fragillimus is said to be the biggest dinosaur ever lived on Earth.We may never know, but the strongest contender at present is the "Ultrasaurus" a kind of brachiosaur, but known only from a HUGE thighbone.
Amphicoelias was probably very similar to Diplodocus or Apatosaurus, just much larger.
ampheeceelas