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Titanosauria have the largest range of body size of any sauropod clade, and includes both the largest known sauropods and some of the smallest. [25] One of the largest titanosaurs, Patagotitan, had a body mass estimated to be 69 tonnes (76 tons), whereas one of the smallest, Magyarosaurus, had a body mass of approximately 900 kilograms (2,000 lb).
A number of bulges for muscle attachment on the humerus were unique characteristics of Patagotitan. In a depression (fossa) on the front upper portion of the humerus, there was a pair of scars above each other, with the top one being wider than tall and the bottom one being taller than wide; this was where the coracobrachialis muscle inserted.
Dreadnoughtus is a genus of titanosaurian sauropod dinosaur containing a single species, Dreadnoughtus schrani. D. schrani is known from two partial skeletons discovered in Upper Cretaceous (Campanian to Maastrichtian; approximately 76–70 Ma) rocks of the Cerro Fortaleza Formation in Santa Cruz Province, Argentina.
Bruhathkayosaurus (/ b r uː ˌ h æ θ k eɪ oʊ ˈ s ɔːr ə s /; meaning "huge-bodied lizard") is a controversial genus of sauropod dinosaur found in the Kallamedu Formation of India.The fragmentary remains were originally described as a theropod, but it was later determined to be a titanosaurian sauropod.
Eutitanosauria is a clade of titanosaurs, encompassing the more derived members of the group and characterized by the absence of the hyposphene-hypantrum articulation and possibly the presence of osteoderms.
The few exceptions of smaller size are hypothesized to be caused by island dwarfism, or other ecological pressures, although there is a trend in some Titanosauria towards a smaller size. The titanosaurs , however, were some of the largest sauropods ever.
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Lohuecotitan was recognized by its describers as having a number of unique characteristics (autapomorphies) not seen in other titanosaurs. In the dorsal vertebrae, the edges of the postspinal laminae extend outwards. In the first several caudal vertebrae, the medial spinoprezygapophyseal and spinopostzygapophyseal laminae respectively connect ...