Outline: a typical early sauropodomorph
Macrocollum
"long neck"
- Lived
- 227 to 206 million years ago, Late Triassic
- Group
- Early sauropodomorphs, Unaysauridae
- Found in
- Brazil
- Named by
- Müller et al. 2018
Where its fossils were found
The evidence
Today
220 million years ago
Field notes
About Macrocollum
What it was like
Macrocollum was a plant eater from the long-necked line that later produced the giant sauropods. It walked on its hind legs and had a neck much longer than those of most of its early relatives, which gave it its name.
It is one of the oldest dinosaurs known with a truly long neck.
Its world
It lived in the Late Triassic in what is now southern Brazil. Its bones come from the Caturrita Formation, where it shared the land with the plant eaters Unaysaurus and Guaibasaurus.
How it was found
Müller and colleagues named Macrocollum in 2018. Three skeletons were found together, which suggests these animals may have lived in groups.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Unaysauridae
Sources: WikidataNamed in: R. T. Müller, M. C. Langer, and S. Dias-da-Silva. 2018. An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs. Biology Letters 14:20180633:1-5