Thyreosaurus fossil map
Where fossils of Thyreosaurus have been found, shown on the Earth as it looked about 160 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 160 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 | Stegosaurs & ankylosaurs |
|---|---|
| Lived | 168.2–161.5 million years ago (Bathonian to Callovian) |
| Periods | Jurassic |
| Family | Stegosauridae |
| Named by | Zafaty et al. 2024 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | Morocco |
| Rock formations | El Mers III |
About Thyreosaurus
Thyreosaurus is an extinct genus of stegosaurian dinosaur from the Middle Jurassic El Mers III Formation of Morocco. The genus contains a single species, Thyreosaurus atlasicus, known from a partial disarticulated skeleton consisting of several dorsal vertebrae, ribs, a limb bone, and dermal bones. Thyreosaurus is characterized by a unique dermal armor with an asymmetrical texture, indicating that it may have been recumbent. Alongside Adratiklit, Thyreosaurus increases the diversity of unique stegosaurs occurring in the Middle Jurassic of Africa.
Text in “About” is quoted from the Wikipedia article Thyreosaurus (revision 1350119794), 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: Q125200697.
