Arginbaatar fossil map
Where fossils of Arginbaatar have been found, shown on the Earth as it looked about 115 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 115 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 | 119.57–110.1 million years ago (Aptian to Albian) |
| Periods | Cretaceous |
| Family | Arginbaataridae |
| Named by | Trofimov 1980 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | Mongolia |
| Rock formations | Dzunbain |
About Arginbaatar
Arginbaatar is a genus of extinct mammal from the Lower Cretaceous of Mongolia. It was a member of the Multituberculata, an order which is also extinct. It belongs to the family Arginbaataridae (Hahn & Hahn 1983). The genus Arginbaatar was named by Trofimov B.A. in 1980. Baatar is Mongolian for "hero" or "warrior."
The primary species, Arginbaatar dmitrievae, was also named by Trofimov. The fossil remains date to the Aptian or Albian (Lower Cretaceous) Dzunbain Formation of Mongolia.
This genus is the only known member of its family, which is thus monotypic. Some characteristics are "Plagiaulacida"-like, while others are more akin to the further derived suborder of Cimolodonta. Exactly where it fits in is unclear. "This family shows a mixture of 'plagiaulacidan' and cimolodontan characters" (Kielan-Jaworowska & Hurum, 2001, p. 415).
Text in “About” is quoted from the Wikipedia article Arginbaatar (revision 1283168276), 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: Q642139.
