Nemegtosaurus fossil map
Where fossils of Nemegtosaurus 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 | Sauropods & prosauropods |
|---|---|
| Lived | 89.8–66 million years ago (Coniacian to Maastrichtian) |
| Periods | Cretaceous |
| Family | Nemegtosauridae |
| Named by | Nowinski 1971 |
| Fossil records | 3 occurrences at 3 locations (PBDB) |
| Found in | Japan, China, Mongolia |
| Rock formations | Tamayama, Subashi, Nemegt |
About Nemegtosaurus
Nemegtosaurus (meaning "reptile from the Nemegt") was a sauropod dinosaur from the Late Cretaceous Period of what is now Mongolia. Measuring an estimated 12–13 m (39–43 ft) long and weighing 20 t (44,000 lb), it was named after the Nemegt Basin in the Gobi Desert, where the remains — a single skull — were found. The skull resembles diplodocoids in being long and low, with pencil-shaped teeth. However, recent work has shown that Nemegtosaurus is in fact a titanosaur, closely related to animals such as Saltasaurus, Alamosaurus, and Rapetosaurus.
Text in “About” is quoted from the Wikipedia article Nemegtosaurus (revision 1376729141), 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: Q132500.
