Eocursor is a genus of dinosaur belonging to the group Ornithischia. It lived during the Early Jurassic period, approximately 200 million years ago. The first fossils of Eocursor were discovered in the early 1990s in the Elliot Formation of South Africa, adding a critical piece to the puzzle of dinosaur origins.

The precise age of this taxon has been a matter of uncertainty. Initially believed to have lived during the Late Triassic (Norian age), around 210 million years ago, there is, however, no independent geochronological evidence to support this assumption. The available data renders it impossible to definitively ascertain whether Eocursor belongs to the Triassic or Early Jurassic period (possibly as young as Sinemurian).

Eocursor was a small, agile dinosaur, measuring around 3 to 4 feet (1 to 1.2 meters) in length. As an early member of the ornithischian group, it exhibited some defining features that set it apart from other dinosaurs.

One of the most notable characteristics of Eocursor was its bipedal stance, walking on its hind limbs with a relatively small, gracile build. Its long legs and lightweight frame likely allowed it to be a swift and agile runner. Unlike later ornithischians, Eocursor lacked the advanced jaw adaptations for processing vegetation, indicating it was likely omnivorous or carnivorous.