Gremlin fossil map
Where fossils of Gremlin 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 | Horned & dome-headed dinosaurs |
|---|---|
| Lived | 83.6–72.2 million years ago (Campanian) |
| Periods | Cretaceous |
| Family | Leptoceratopsidae |
| Named by | Ryan et al. 2023 |
| Fossil records | 2 occurrences at 2 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Two Medicine, Oldman |
About Gremlin
Gremlin (named after the mythical creature of the same name) is a genus of leptoceratopsid ceratopsian dinosaurs from the Campanian stage of the Cretaceous period, 77 million years ago. It contains one species, Gremlin slobodorum, named in 2023 by Michael J. Ryan and colleagues from a frontal bone found in the Oldman Formation of Alberta. It can be distinguished from other leptoceratopsids by a ridge on the frontal that runs transversely from the midline of the skull outwards to the top end of the orbit.
Text in “About” is quoted from the Wikipedia article Gremlin slobodorum (revision 1314305694), 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: Q124482470.