Ctenacodon fossil map
Where fossils of Ctenacodon have been found, shown on the Earth as it looked about 145 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 145 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 | Early mammals |
|---|---|
| Lived | 154.8–139.1 million years ago (Kimmeridgian to Berriasian) |
| Periods | Jurassic, Cretaceous |
| Family | Allodontidae |
| Named by | Marsh 1879 |
| Fossil records | 20 occurrences at 6 locations (PBDB) |
| Found in | United States, United Kingdom |
| Rock formations | Morrison, Lulworth |
About Ctenacodon
Ctenacodon is a genus of extinct mammal that lived in what is now North America during the Upper Jurassic period. It is a member of the family Allodontidae within the order Multituberculata. Ctenacodon, also known as Allodon (Marsh 1881), was named by Othniel Charles Marsh in 1879. At least three species are currently recognized.
Present in stratigraphic zone 5. Remains possibly referrable to Ctenacodon have been recovered from stratigraphic zone 2.
Text in “About” is quoted from the Wikipedia article Ctenacodon (revision 1369130140), 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: Q3699001.
