Torosaurus fossil map
Where fossils of Torosaurus have been found, shown on the Earth as it looked about 66 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 66 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 | Horned & dome-headed dinosaurs |
|---|---|
| Lived | 83.6–66 million years ago (Campanian to Maastrichtian) |
| Periods | Cretaceous |
| Family | Ceratopsidae |
| Named by | Marsh 1891 |
| Fossil records | 12 occurrences at 11 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Hell Creek, Lance, Javelina, North Horn, Scollard, Laramie |
About Torosaurus
Torosaurus (meaning "perforated lizard", in reference to the large openings in its frill) is a genus of herbivorous chasmosaurine ceratopsian dinosaur which lived during the Maastrichtian Stage of the Cretaceous Period between 68 and 66 million years ago, although it is possible that the species range might extend back as far back as 69 million years ago. Fossils which have been definitively identified as Torosaurus or which might belong to it have been discovered across the Western Interior of North America, from as far north as Saskatchewan to as far south as Texas.
Text in “About” is quoted from the Wikipedia article Torosaurus (revision 1375992171), 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.
