Amazonsaurus is a genus of titanosaur sauropod dinosaur that lived during the Late Cretaceous period in what is now South America. It was first described in 2009 by paleontologists Alexander Kellner and Diogenes de Almeida Campos. Its name derives from the Amazon River region of South America, where its fossils have been discovered. The holotype skeleton of Amazonsaurus was discovered in the Bauru Basin of Brazil in 1999. It is incomplete, but includes parts of the skull, vertebrae, ribs, and limb bones. The type species is Amazonsaurus maranhensis.
Amazonsaurus is a large, long-necked dinosaur, estimated to have been up to 30 m (98 ft) long. It had a relatively short, wide skull, with a deep lower jaw. The vertebrae had large, robust ribs and a broad, box-like shape. The forelimbs were relatively short and slender, while the hindlimbs were long and robust. Amazonsaurus is believed to have been an herbivore, and was probably a browser, feeding on leaves and other vegetation. It may have lived in herds, and may have been able to move quickly, thanks to its long hindlimbs.
Amazonsaurus is one of the few sauropod dinosaurs known from South America, and is an important part of the fossil record for the region. It provides an important insight into the diversity of sauropods during the Late Cretaceous, and helps to fill in gaps in the evolutionary history of these large dinosaurs.
| Name: | Amazonsaurus dinosaurs |
| Size: | Around 9 meters (30 feet) in length. |
| Body: | Amazonsaurus forelimbs were relatively short and slender, while the hindlimbs were long and robust. |
| Neck: | Amazonsaurus is a large, long-necked dinosaur, |
| Teeth : | Amazonsaurus had long, spatulate teeth, suitable for a herbivorous diet. |
| Main Facts: | Amazonsaurus is an extinct genus of sauropod dinosaur from the Early Cretaceous of South America. It is one of the few known sauropods from the Cretaceous of South America, and the first from the continent to be formally described. |
Amazonsaurus is an extinct genus of sauropod dinosaur that lived in the Late Cretaceous period around 68-65 million years ago. It was first discovered in 1993 in western Brazil. It was named after the Amazon River, which is nearby the discovery site.
The fossil remains of Amazonsaurus were found in the Bauru Basin in western Brazil, which is part of the Araripe Basin. The fossil remains were found in what is known as the Alcântara Formation, which is part of the Cretaceous–Paleogene boundary.
Amazonsaurus was a medium-sized sauropod that was estimated to be about 20 meters (65 feet) in length and weighed between 10 and 15 tons. It had a long neck and a small head, with teeth that were adapted for a herbivorous diet. Its body was covered in scales and it had four legs, with the hind legs being slightly longer than the front ones.
Amazonsaurus was part of a diverse fauna of dinosaurs that lived in the Late Cretaceous period. This included other sauropods like the titanosaurids and the brachiosaurids. It also coexisted with theropods such as Allosaurus and Tyrannosaurus.
The extinction of Amazonsaurus is believed to have occurred at the end of the Cretaceous period, around 65 million years ago. At this time, a large asteroid hit the earth, causing a mass extinction event that wiped out most of the dinosaurs. It is likely that Amazonsaurus was one of the casualties.
Despite its extinction, Amazonsaurus has left behind a legacy of scientific knowledge. Its discovery was the first time that a sauropod had been found in South America, and it helped to provide insight into the evolution of sauropods in the Late Cretaceous period.
Amazonsaurus is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, approximately 70 million years ago. It is known from a single partial skeleton discovered in Brazil in the late 1990s. The skeleton includes a partial skull, cervical vertebrae, partial dorsal vertebrae, a partial sacrum, partial caudal vertebrae, ribs, and limb bones.
The skull of Amazonsaurus is moderately elongated, with most of the length being due to the large premaxilla bones. The premaxillae form a narrow, pointed snout, with the external nares located near the tip. The nasals and frontals form an elevated region at the top of the skull roof. The orbits, or eye sockets, are relatively large and oval. The skull also has a large number of teeth – around 40 in total. These are small, pointed, and serrated.
The neck vertebrae ofAmazonsaurus are long and low, with short, thick ribs. The cervical vertebrae have a single large pleurocoel, or air pocket, on each side. The dorsal vertebrae are more robust and have two pleurocoels each. The sacrum is composed of five fused vertebrae and is connected to the ilia, or hip bones.
The limb bones of Amazonsaurus are relatively long and slender, with the humerus being the longest bone in the forelimb. The hindlimbs are longer than the forelimbs, and the femur is the longest bone in the hindlimb. The bones of the feet are short and robust, and the toes are short and slightly curved.
The neck vertebrae ofAmazonsaurus are long and low, with short, thick ribs. The cervical vertebrae have a single large pleurocoel, or air pocket, on each side. The dorsal vertebrae are more robust and have two pleurocoels each. The sacrum is composed of five fused vertebrae and is connected to the ilia, or hip bones.
Amazonsaurus was a large and heavily-built titanosaurian sauropod. It had a long, low skull, long, low neck vertebrae, robust limb bones, and short, robust toes. This suggests that it may have been a relatively slow-moving, ground-dwelling animal.
Amazonsaurus is an extinct genus of titanosaurian sauropod dinosaur from Late Cretaceous-aged rocks of the Alto Ligon Formation in Brazil. The type species of Amazonsaurus, A. maranhensis, was named and described in 2017 by researchers from the Federal University of Rio de Janeiro, the University of São Paulo, and the University of Alberta.
Amazonsaurus was a large, long-necked sauropod, estimated to have been around 18 meters (59 feet) in length. Its skull was relatively small compared to other titanosaurians, and it had a flat and broad snout, with large nostrils. Its teeth were all small and conical, and its neck was relatively short. Its forelimbs were short and robust, with four clawed fingers on each hand. Its hindlimbs were long, and it had four-toed feet.
The fossil remains of Amazonsaurus were discovered in the Lígia locality of the Alto Ligon Formation in the municipality of Barreirinhas, Maranhão. This formation is composed of floodplain deposits, and is believed to be of Late Cretaceous age, approximately 90 million years old. The fossil remains of Amazonsaurus are not complete, but include several vertebrae from the back and tail, as well as a partial shoulder blade and numerous ribs.
