Sinobaatar fossil map
Where fossils of Sinobaatar 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 | 125.77–100.5 million years ago (Barremian to Albian) |
| Periods | Cretaceous |
| Family | Eobaataridae |
| Named by | Hu and Wang 2002 |
| Fossil records | 8 occurrences at 3 locations (PBDB) |
| Found in | China |
| Rock formations | Fuxin, Yixian, Shahai |
About Sinobaatar
Sinobaatar is a genus of extinct mammal from the Lower Cretaceous of China. It is categorized within the also extinct order Multituberculata and among these it belongs to the plagiaulacid lineage (a possible infraorder). Sinobaatar was a small herbivore during the Mesozoic era, commonly called "the age of the dinosaurs". The genus was named by Hu Y. and Wang Y. in 2002. Three species have been described.
It has been found in Lower Cretaceous strata of the Yixian Formation in Liaoning, China. According to Hu & Wang (2002),
"[t]he dental features of Sinobaatar show again that eobaatarids are obviously intermediate between Late Jurassic multituberculates and the later forms".
Many Multituberculata are only known from teeth, but the type specimen of Sinobaatar is a reasonably complete skeleton.
A probable tyrannosauroid specimen GMV 2124 (also known as NGMC 2124), previously attributed to Sinosauropteryx, contained a jaw of Sinobaatar in its stomach region.
Text in “About” is quoted from the Wikipedia article Sinobaatar (revision 1284380834), 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: Q2464686.
