Alamosaurus dinosaurs habitat size diet and images

Posted by

Alamosaurus dinosaurs

Alamosaurus is a genus of titanosaurian sauropod dinosaurs, containing a single known species, Alamosaurus sanjuanensis, from the late Cretaceous Period of what is now southern North America. Wikipedia

Lived: 83.6 million years ago – 66 million years ago (Campanian – Maastrichtian)
Scientific name: Alamosaurus (Ojo Alamo lizard)
Length: 30 m
Higher classification: Opisthocoelicaudiinae
Rank: Genus

Scientific classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Clade: Dinosauria
  • Order: Saurischia
  • Suborder: Sauropodomorpha
  • Sauropoda
  • Titanosauria
  • Lithostrotia
  • Family: Saltasauridae
  • Subfamily: Opisthocoelicaudiinae
  • Genus: Alamosaurus
  • Type species: Alamosaurus sanjuanensis

Alamosaurus dinosaurs

Alamosaurus is a large dinosaur which lived approximately 65 to 73 million years ago during the late Cretaceous Period. It was first discovered in 1922 in New Mexico and was subsequently named by Smithsonian paleontologist Charles W. Gilmore that same year. An interesting fact about the name of Alamosaurus isn’t named after the Alamo in Texas—although large numbers of this dinosaur have been found in that state. Instead, it was named after the Ojo Alamo sandstone formation in New Mexico.

Alamosaurus was an extremely massive dinosaur which was approximately 70 feet long, 28 feet high and weighed as much as 33 tons. They had extremely long necks which they probably used to browse ground based plant life and had a long tail that they probably used as a whip.

Alamosaurus dinosaurs Classification

The Alamosaurus is classified under suborder Sauropodomorpha, clade Titanosauria and family Saltasauridae. Titanosaurians were large sauropods that existed on the earth from the late Jurassic period to the end of the Cretaceous. It is also included in the subfamily Opisthocoelicaudiinae, which includes titanosaurians that lacked wrist bones and digits. This explained the conspicuous absence of phalanges in the skeletal remains of the Alamosaurus.


Alamosaurus was a herbivore. It lived in the Late Cretaceous period and inhabited North America. Its fossils have been found in places such as Utah, New Mexico and Texas.

Habitat and geographic

Skeletal elements of Alamosaurus are among the most common Late Cretaceous dinosaur fossils found in the United States Southwest and are now used to define the fauna of that time and place, known as the “Alamosaurus fauna”. In the south of Late Cretaceous North America, the transition from the Edmontonian to the Lancian faunal stages is even more dramatic than it was in the north.

Thomas M. Lehman describes it as “the abrupt reemergence of a fauna with a superficially ‘Jurassic’ aspect.” These faunas are dominated by Alamosaurus and feature abundant Quetzalcoatlus in Texas. The Alamosaurus-Quetzalcoatlus association probably represent semi-arid inland plains.

Dinosaurs Facts

  • Lived in North America, Many fossils have been found in what is today the Southwestern United States.
  • herbivore (plant-eater).
  • Alamosaurus was usually about 69 feet (21 meters) long.
  • Alamosaurus weighed an estimated 33 tons.

Also more: Agathaumas

Alamosaurus dinosaurs images

Reference site:

Related Posts

Leave a Reply

Your email address will not be published.