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Argentinosaurus (meaning "lizard from Argentina") is a genus of giant sauropod dinosaur that lived during the Late Cretaceous period in what is now Argentina.Although it is only known from fragmentary remains, Argentinosaurus is one of the largest known land animals of all time, perhaps the largest, measuring 30–35 m (98–115 ft) long and weighing 65–80 t (72–88 short tons).
Mamenchisaurus (/ m ə ˌ m ʌ n tʃ i ˈ s ɔː r ə s / mə-MUN-chee-SOR-əs, Dinosauria Translation and Pronunciation Guide M or spelling pronunciation / m ə ˌ m ɛ n tʃ ɪ ˈ s ɔː r ə s /) is a genus of sauropod dinosaur known for their remarkably long necks [2] which made up nearly half the total body length. [3]
Most of the largest herbivorous specimens on record were discovered in the 1970s or later, and include the massive titanosaur Argentinosaurus huinculensis, which is the largest dinosaur known from uncontroversial and relatively substantial evidence, estimated to have been 70–80 t (77–88 short tons) and 36 m (118 ft) long.
An adult bee hummingbird, the smallest known dinosaur. The smallest dinosaur known is the bee hummingbird, [158] with a length of only 5 centimeters (2.0 in) and mass of around 1.8 g (0.063 oz). [159] The smallest known non-avialan dinosaurs were about the size of pigeons and were those theropods most closely related to birds. [160]
The longest dinosaur known from reasonable fossils material is probably Argentinosaurus huinculensis with length estimates of 35 metres (115 ft) to 36 metres (118 ft) according to the most recent researches. [23] [24] However the giant Barosaurus specimen BYU 9024 might have been even larger reaching lengths of 45–48 meters (148–157 ft).
The teams ultimately found five different tracks, four of which are thought to belong to the long-necked plant-eating dinosaur known as Cetiosaurus, which measured almost 60 feet in length ...
It is among the longest dinosaurs ever discovered, with the three known specimens reaching 33–40 meters (108–131 ft) in length, with the largest individual possibly exceeding 40 meters (130 ft) in size. [4] [5] Mass estimates for the WDC and BYU specimens tend to be around 35–44 metric tons (39–49 short tons) in body mass. [5]
Supersaurus was likely the world's longest dinosaur — around 137 feet, on average, from nose to tail. Scientists crowned the world's longest dinosaur — a Supersaurus longer than 3 school buses ...