| Color code: | Eusauropoda | Macronaria | Titanosauriformes | |
| Diplodocoidea | Rebbachisauridae | Flagellicaudata | Dicraeosauridae | |
| Diplodocidae | Apatosaurinae | Diplodocinae |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.