Koleken fossil map
Where fossils of Koleken 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 | Theropods |
|---|---|
| Lived | 72.2–66 million years ago (Maastrichtian) |
| Periods | Cretaceous |
| Family | Abelisauridae |
| Named by | Pol et al. 2024 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | Argentina |
| Rock formations | La Colonia |
About Koleken
Koleken (meaning "coming from clay and water") is a genus of carnotaurin abelisaurid from the Maastrichtian La Colonia Formation in the Chubut Province of Argentina. The genus contains a single species, Koleken inakayali, known from one immature specimen about 4.97 metres (16.3 ft) long and six years old in minimum age.
Text in “About” is quoted from the Wikipedia article Koleken (revision 1379846745), 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: Q126012874.