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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.
English: Reconstruction of USNM 5730, the "Felch Quarry Skull," which has been attributed to Brachiosaurus sp. Known material is shown in white, unknown material in gray. Unknown regions have been restored following the more complete skulls of Giraffatitan and Abydosaurus. Key: Bones an = angular; ar = articular; bo = basioccipital; d = dentary
FMNH P 25107 (Holotype): This is the most complete adult Brachiosaurus specimen known. Dorsal vertebrae 6-12 are preserved, in addition to a sacrum, two caudals, a rib, a coracoid, a humerus, and a femur. USNM 21903 ("Potter Creek Humerus"): Scaled after the holotype, this represents the largest known Brachiosaurus specimen. This humerus has ...
USNM 5730 ("Felch Quarry Skull"): This is the skull that Marsh used for his Brontosaurus restoration. It is partially complete and crushed. A 99 cm cervical was also present at the dig site but was destroyed during excavation. Shown in lime. BYU 12866 and 12867 ("BYU Cervicals"): C5 and C10, respectively.
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 ...
Date/Time Thumbnail Dimensions User Comment; current: 11:45, 23 September 2007: 610 × 371 (18 KB): Marmelad {{Information |Description=Size comparison between the giant sauropod dinosaur Brachiosaurus and a human |Source=Based on Image:Human-brachiosaurus size comparison.png |Date=2007-09-23 |Author=Marmelad |Permission=Attribution ShareA
6. Chiefs defensive coordinator Steve Spagnuolo. With each Chiefs Super Bowl win, Spagnuolo gets closer to history. There are no members of the Pro Football Hall of Fame who made it almost ...
Traditionally, the distinctive high-crested skull was seen as a characteristic of the genus Brachiosaurus, to which Giraffatitan brancai was originally referred; however, it is possible that Brachiosaurus altithorax did not show this feature, since within the traditional Brachiosaurus material it is known only from Tanzanian specimens now ...