| Dinosauria Owen, 1842 |
| Sauropoda Marsh, 1878 |
| Eusauropoda Upchurch, 1995 |
| Neosauropoda Bonaparte, 1986 |
| Diplodocoidea Marsh, 1884 |
| Flagellicaudata Harris & Dodson, 2004 |
| Diplodocidae Marsh, 1884 |
| Diplodocinae Marsh, 1884 |
| GaleamopusTschopp, Mateus & Benson, 2015 |
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