Hadrosaurus fossil map
Where fossils of Hadrosaurus have been found, shown on the Earth as it looked about 75 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 75 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Iguanodonts & duck-bills |
|---|---|
| Lived | 85.7–66 million years ago (Santonian to Maastrichtian) |
| Periods | Cretaceous |
| Family | Hadrosauridae |
| Named by | Leidy 1858 |
| Fossil records | 9 occurrences at 9 locations (PBDB) |
| Found in | United States, Canada, Kazakhstan |
| Rock formations | txn:38755, Marshalltown, Woodbury, Navesink, Frenchman, Zhuravlevskaya |
About Hadrosaurus
Hadrosaurus (; lit. 'bulky lizard') is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation in New Jersey about 83.6 to 77.9 million years ago. The holotype specimen was found in fluvial marine sedimentation, meaning that the corpse of the animal was transported by a river and washed out to sea. Some fossils are found in the Tar Heel/Coachman Formation.
Text in “About” is quoted from the Wikipedia article Hadrosaurus (revision 1370996383), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 22 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q14511.
