Formations
Dinosaur-bearing rock formations
The 26 formations with at least four of the 99 genera on this site, ranked by how many genera they hold.
| Formation | Genera | Records | Stage | Country |
|---|---|---|---|---|
| Dinosaur Park | 28 | 288 | Campanian | Canada |
| Judith River | 19 | 65 | Campanian | United States, Canada |
| Oldman | 19 | 104 | Campanian | Canada |
| Hell Creek | 16 | 249 | Maastrichtian | United States |
| Lance | 16 | 158 | Maastrichtian | United States |
| Morrison | 15 | 678 | Kimmeridgian–Tithonian | United States |
| Kirtland | 14 | 44 | Campanian | United States |
| Horseshoe Canyon | 12 | 88 | Maastrichtian | Canada |
| Aguja | 10 | 44 | Campanian | United States, Mexico |
| Ferris | 10 | 42 | Maastrichtian | United States |
| Two Medicine | 10 | 47 | Campanian | United States, Canada |
| Frenchman | 8 | 24 | Maastrichtian | Canada |
| Fruitland | 8 | 21 | Campanian | United States |
| Tendaguru | 7 | 96 | Kimmeridgian–Tithonian | Tanzania |
| Wessex | 7 | 32 | Hauterivian–Barremian | United Kingdom |
| Cedar Mountain | 6 | 22 | Albian–Cenomanian | United States |
| Denver | 6 | 16 | Maastrichtian | United States |
| Süntel | 6 | 6 | Kimmeridgian | Germany |
| Wapiti | 6 | 10 | Campanian | Canada |
| Alcobaça | 5 | 10 | Kimmeridgian | Portugal |
| Baruungoyot | 5 | 19 | Campanian | Mongolia |
| Bearpaw Shale | 5 | 7 | Campanian | Canada, United States |
| Javelina | 5 | 20 | Maastrichtian | United States, Mexico |
| Lourinhã | 5 | 22 | Kimmeridgian–Tithonian | Portugal |
| St. Mary River | 5 | 9 | Maastrichtian | Canada, United States |
| Sînpetru | 5 | 25 | Maastrichtian | Romania |