was a 30-ton plant-eater, which lived during the Jurassic period around 150 million years ago.
Discovered by hikers in 1979, Seismosaurus wasn't seen by Gillette until 1985.
Gillette tells what distinguishes Seismosaurus from the rest, such as its closest relative, Diplodocus.
It appears that Seismosaurus had both a crop (towards the front end of its body, in front of the stomach) and a gizzard (between the stomach and small intestine).
He and his colleagues have collected more seismosaurus
bone samples, hoping to sequence and identify the proteins.
In the case of New Mexico's Seismosaurus, the shapes convinced David Gillette they were vertebrae from a sauropod's tail; their size made him believe they belonged to an as-yet-unknown animal.
Later creatures, among them Seismosaurus,have been uncovered in Jurassic strata.
But the seismosaurus skeleton lies in a sandstone that contains no other rocks or pebbles aside from the ones found next to the bones.
The placement of the stones indicates seismosaurus had a crop and a gizzard, somewhat similar to the organs in many modern birds, suggests Gillette.
Japanese archaeologist Dr Rikao Yanagida claims the noise of a 50 metre long, 100-ton seismosaurus
mating would be so loud other other smaller dinosaurs in the area would have been killed by the noise - robbing carnivores of potential prey.
Paleontologists have started using a shotgun in the hunt for a gargantuan dinosaur dubbed Seismosaurus. The gun is part of an arsenal of sophisticated techniques scientists are now attempting to apply to paleontology.
Seismosaurus, or "earth-shaker," is an unofficial name used to describe the huge, 140-million-year-old skeleton that David D.
While other scientists have since discovered a dinosaur they call Seismosaurus
(SN: 8/16/86, p.103), which surpassed Ultrasaurus in length, Brigham Young researchers believe that Ultrasaurus holds the title of the tallest and possibly heaviest dinosaur ever discovered.
Now paleontologist David Gillette unveils Seismosaurus, or "earthshaker," a dinosaur he thinks was even longer and possibly even larger.
Seismosaurus's bones were discoveredby three hikers at a site about 60 miles northwest of Albuquerque.