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The scapula of Brontosaurus also has a rounded extension off of its edge, a characteristic unique to Brontosaurus among Apatosaurinae. The coracoids of apatosaurines have a quadratic outline in dorsal view. Sterna have been preserved in some specimens of Apatosaurus and Brontosaurus, which display an oval outline. [1]
One of traits that distinguishes Brontosaurus and Apatosaurus is the presence of a depression on the posterior face of the scapula, which the latter lacks. The scapula of Brontosaurus also has a rounded extension off of its edge, a characteristic unique to Brontosaurus among Apatosaurinae. [3]
Apatosaurus excelsus was the original type species of Brontosaurus, first named by Marsh in 1879. Elmer Riggs reclassified Brontosaurus as a synonym of Apatosaurus in 1903, transferring the species B. excelsus to A. excelsus.
The world's most iconic dinosaur -- and the largest to ever roam the earth -- is finally getting some respect from science. We were all taught to identify the long-necked Brontosaurus through ...
Diplodocoidea is a superfamily of sauropod dinosaurs, which included some of the longest animals of all time, including slender giants like Supersaurus, Diplodocus, Apatosaurus, and Amphicoelias. Most had very long necks and long, whip-like tails; however, one family (the dicraeosaurids ) are the only known sauropods to have re-evolved a short ...
Apatosaurinae United States: Known as Apatosaurus excelsus from 1903 to 2015 [29] Camarasaurus leptodirus Cope, 1879 Subjective junior synonym of Camarasaurus supremus [31] Cope: 1879 Camarasauridae United States: Titanosaurus blanfordi Lydekker, 1879 Nomen dubium [28] Lydekker: 1879 India: Brontosaurus amplus Marsh, 1881
Other prominent dinosaurs contained in this clade include Apatosaurus, Supersaurus, and Brontosaurus. Diplodocoids are distinguished by a unique head shape, which displays certain highly derived features when compared to other sauropods. The teeth are located entirely anterior to the antorbital fenestra and the snout is especially broad.
More distantly related is the contemporaneous Apatosaurus, which is still considered a diplodocid, although not a diplodocine, as it is a member of the sister subfamily Apatosaurinae. [52] [53] The Portuguese Dinheirosaurus and the African Tornieria have also been identified as close relatives of Diplodocus by some authors.