Outline: a typical early sauropodomorph
Anchisaurus
ANG-kee-SORE-us
"near lizard"
Type species Anchisaurus polyzelus
- Lived
- 201 to 193 million years ago, Early Jurassic
- Length
- about 2 m (7 ft)
- Group
- Early sauropodomorphs
- Found in
- United States
- Named by
- Marsh 1885
Size comparison
To scale
Scale in metersOutline: typical early sauropodomorph shape
Where its fossils were found
The evidence
Today
195 million years ago
Field notes
About Anchisaurus
What it was like
Anchisaurus was a small, lightly built plant eater about 2 meters (7 feet) long. It belonged to the early relatives of the giant sauropods, but it was tiny by comparison, with a long neck, a small head and a long tail. Its hands carried a large thumb claw.
Its world
It lived about 201 to 193 million years ago, in the Early Jurassic, in what is now Connecticut and Massachusetts in the United States. Its bones come from the red sandstones of the Portland Formation, laid down in a rift valley with lakes and rivers.
How it was found
Marsh gave it the name Anchisaurus in 1885, after two earlier names turned out to be taken by other animals. The type species is Anchisaurus polyzelus. Bones of this kind were among the first dinosaur fossils found in North America, dug up long before the word dinosaur existed.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Massopoda
Sources: WikidataNamed in: O. C. Marsh. 1885. Names of extinct reptiles. American Journal of Science 29:169


