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Amargasaurus (/ ə ˌ m ɑːr ɡ ə ˈ s ɔː r ə s /; "La Amarga lizard") is a genus of sauropod dinosaur from the Early Cretaceous epoch (129.4–122.46 mya) of what is now Argentina.The only known skeleton was discovered in 1984 and is virtually complete, including a fragmentary skull, making Amargasaurus one of the best-known sauropods of its epoch.
Dicraeosauridae includes genera such as Amargasaurus, Suuwassea, Dicraeosaurus, and Brachytrachelopan. Specimens of this family have been found in North America, Asia, Africa, and South America. [1] In 2023, a dicraeosaurid fossil was discovered in India for the first time. [2]
Pilmatueia faundezi fossils have been found in the Mulichinco Formation of Argentina.Known material includes the holotype, MLL Pv-005, a posterior dorsal vertebra; [1] the paratype MLL-Pv-002, a posterior cervical vertebra; MLL-Pv-010, a partial skeleton including cervical vertebrae, dorsal vertebrae, ribs, a caudal vertebra, and incomplete scapulae; [4] and other isolated vertebrae. [1]
Amargasuchus is an extinct genus of crocodylomorph.It was a member of the Trematochampsidae, an enigmatic family of mesoeucrocodylians. Fossils have been found from the La Amarga Formation in Argentina and date back to the Barremian and Aptian stages of the Early Cretaceous. [1]
Mass estimates for Amargasaurus have been noted to vary widely depending on the method used, [11] and studies using other methods, not yet applied to Amargatitanis, have found Amargasaurus to weigh 3.304 metric tons (3.642 short tons) [12] to 4.376 metric tons (4.824 short tons). [13]
The total number of neck vertebrae and length of the spines is based on Amargasaurus. Gallina and colleagues further speculated that the spines in both Amargasaurus and Bajadasaurus might have been used for defense. Due to its forward bend, the bifurcated neural spine of the supposed fifth neck vertebra would have reached past the head, and ...
Casts of Amargasaurus and Carnotaurus, both discovered by the same 1984 expedition in Argentina, Natural History Museum of the University of Pisa. The only skeleton (holotype MACN-CH 894) was unearthed in 1984 by an expedition led by Argentinian paleontologist José Bonaparte. [A] This expedition also recovered the peculiar spiny sauropod ...
Size compared to a human. Ahvaytum is a small sauropodomorph, estimated to be 3 feet (0.91 m) long and 1 foot (0.30 m) tall. [1] Eoraptor, a close relative from Argentina, is known from a larger and more complete skeleton with a total body length of around 1.3 metres (4.3 ft). [5]