Dinosaur fossils in Maryland
The Paleobiology Database records 55 non-avian dinosaur finds in Maryland, from 6 genera. The oldest is Coelurus from the Late Aptian age, about 119.6 million years old. The youngest is Coelurus from the Late Aptian age, as young as about 113.2 million years. Ages are the range the database gives for the rocks, so a find can be tens of millions of years across.
- 55finds
- 6genera
- 119.6oldest, million years ago
- 113.2youngest, million years ago
It ranks 12th of 36 US states on the map by number of finds, with 1% of the finds in the United States. The most recorded dinosaurs are Acrocanthosaurus (2), Coelurus (2) and Tenontosaurus (2). The rock formation with the most finds is called Arundel Clay, with 43.
Which dinosaurs were found in Maryland?
The genera with the most finds here:
| Dinosaur | Finds |
|---|---|
| Acrocanthosaurus | 2 |
| Coelurus | 2 |
| Tenontosaurus | 2 |
| Deinonychus | 1 |
| Propanoplosaurus | 1 |
| Richardoestesia | 1 |
Rock formations with dinosaur finds in Maryland
| Formation | Finds |
|---|---|
| Arundel Clay | 43 |
| Severn | 7 |
| Patuxent | 4 |
Other US states to explore
- Wyoming (1,040)
- Montana (985)
- New Mexico (832)
- Utah (602)
- Colorado (484)
- Texas (448)
- North Dakota (237)
- Arizona (167)
- South Dakota (167)
- New Jersey (70)
See the sea floor where marine reptiles swam: oceanfloormap.com →
Before you go fossil hunting. A dot shows where a find was recorded, not where you may dig. Many fossil sites are on private or protected land and collecting rules differ by country. Check the rules before collecting and never dig on protected sites.