Extinct genus of dinosaurs
Dystrophaeus Temporal range: Late Jurassic,
158 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Metacarpals from the holotype (USNM 2364)
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade :
Dinosauria
Clade :
Saurischia
Clade :
† Sauropodomorpha
Clade :
† Sauropoda
Genus:
† Dystrophaeus Cope, 1877
Species:
†D. viaemalae
Binomial name
† Dystrophaeus viaemalae Cope, 1877
Dystrophaeus is an extinct genus of sauropod dinosaur. Its type and only species is Dystrophaeus viaemalae , named by Edward Drinker Cope in 1877. Its fossils were found in the Tidwell Member of the Morrison Formation of Utah. Due to the fragmentary condition of its only known specimen, the affinities of Dystrophaeus are uncertain, although excavations carried out at the discovery site since 1989 have uncovered more of the original specimen and hold the potential for an improved understanding of the taxon.
Dystrophaeus viaemalae is known from a single fragmentary specimen, the holotype USNM 2364. The specimen initially consisted of a partial dorsal vertebra, a partial scapula, a nearly complete ulna,[a] a partial radius, and three metacarpals.[1] More recent excavations have discovered additional parts of the same specimen, including a phalanx,[2] teeth, and additional vertebrae from the back and tail.[3] The specimen was found in the Tidwell Member of the Morrison Formation and is approximately 158 million years old, making it the oldest species of sauropod from the Morrison Formation by several million years.[3]
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Last Update: 2024-05-13T06:04:13Z
Dystrophaeus is an extinct genus of sauropod dinosaur. Its type and only species is Dystrophaeus viaemalae, named by Edward Drinker Cope in 1877. Its fossils...
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Dyslocosaurus and Dystrophaeus as dicraeosaurids, two genera traditionally not considered to be part of Dicraeosauridae. The specimens of Dystrophaeus viamelae...
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remains from Oklahoma. Indeterminate. Oklahoma, South Dakota and Texas Dystrophaeus D. viaemalae Utah, Tidwell member Multiple vertebrae, teeth and incomplete...
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