Kritosaurus fossil map
Where fossils of Kritosaurus 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 | Brown 1910 |
| Fossil records | 25 occurrences at 21 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Kirtland, Fruitland, Fruitland/Kirtland, Aguja, Milk River, Javelina |
About Kritosaurus
Kritosaurus is an incompletely known genus of hadrosaurid (duck-billed) dinosaur. It lived about 74.5-66 million years ago, in the Late Cretaceous of North America. The name means "separated lizard" (referring to the arrangement of the cheek bones in an incomplete type skull), but is often mistranslated as "noble lizard" in reference to the presumed "Roman nose" (in the original specimen, the nasal region was fragmented and disarticulated, and was originally restored flat).
Text in “About” is quoted from the Wikipedia article Kritosaurus (revision 1376689397), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q968771.
