Outline: a typical sauropod
Brachytrachelopan
"short-necked shepherd"
- Lived
- 155 to 145 million years ago, Late Jurassic
- Diet
- Herbivore
- Length
- about 10 m (33 ft)
- Group
- Sauropods, Dicraeosauridae
- Found in
- Argentina
- Named by
- Rauhut et al. 2005
Size comparison
To scale
Scale in metersOutline: typical sauropod shape
Where its fossils were found
The evidence
Today
150 million years ago
Field notes
About Brachytrachelopan
What it was like
Brachytrachelopan was a sauropod with a surprisingly short neck. Most sauropods had very long necks, but this one's neck was shorter than its back, so it probably fed close to the ground, on low plants, rather than reaching high into trees.
It was about 10 meters (33 feet) long and belonged to the dicraeosaurs, a family of smaller sauropods that includes Amargasaurus and Dicraeosaurus.
Its world
It lived about 155 to 145 million years ago, in the Late Jurassic, in what is now Argentina. Its bones come from the Cañadón Calcáreo Formation, where it shared the land with the larger sauropod Tehuelchesaurus.
How it was found
Rauhut and colleagues named Brachytrachelopan in 2005, from a single partial skeleton. The first bones were spotted by a shepherd looking for lost sheep, which is where the name comes from.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Dicraeosauridae
Sources: WikidataNamed in: O. W. M. Rauhut, K. Remes, and R. Fechner, G. Cladera, P. Puerta. 2005. Discovery of a short-necked sauropod dinosaur from the Late Jurassic period of Patagonia. Nature 435:670-672




