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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).
Size is an important aspect of dinosaur paleontology, of interest to both the general public and professional scientists. Dinosaurs show some of the most extreme variations in size of any land animal group, ranging from tiny hummingbirds , which can weigh as little as two grams, to the extinct titanosaurs , such as Argentinosaurus and ...
Brachiosaurus is estimated to have been between 18 and 22 meters (59 and 72 ft) long; body mass estimates of the subadult holotype specimen range from 28.3 to 46.9 metric tons (31.2 to 51.7 short tons). It had a disproportionately long neck, small skull, and large overall size, all of which are typical for sauropods.
Macronarians show divergence in the evolution of body size with some members both increasing and decreasing in size from the primitive condition. For example, despite all being in the titanosaur clade, Argentinosaurus reached enormous sizes (~50 tons), while Saltasaurus and Magyarosaurus reached only 1.5-3 metric tons, which is fairly small for ...
Measurements taken from a number of specimens show they averaged 101 to 164 kg (223 to 362 lb) in weight. [ 50 ] [ 51 ] The largest known kangaroo was an as yet unnamed species of Macropus , estimated to weigh 274 kg (604 lb), [ 52 ] larger than the largest known specimen of Procoptodon , which could grow up to 2 m (6 ft 7 in) and weigh 230 kg ...
Argentinosaurus: 1993 Huincul Formation (Late Cretaceous, Cenomanian to Turonian) Argentina: May be the largest known dinosaur Argyrosaurus: 1893 Lago Colhué Huapí Formation (Late Cretaceous, Campanian to Maastrichtian) Argentina: Several remains were historically assigned to this genus, but only the holotype can be confidently assigned to it ...
They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land. Well-known genera include Apatosaurus, Argentinosaurus, Alamosaurus, Brachiosaurus, Camarasaurus, Diplodocus, and Mamenchisaurus. [3] [4]
Extrapolations based on the more completely known Brachiosaurus indicate that the head of Sauroposeidon could reach 16.5–18 m (54–59 ft) in height with its neck extended, which would make it one of the tallest known dinosaurs. With an estimated length of 27–34 m (89–112 ft) and a mass of 40–60 t (44–66 short tons), it also ranks ...