Archaeoceratops oshimai

†Archaeoceratops oshimai was a small basal neoceratopsian dinosaur herbivore of the Early Cretaceous, discovered in the Xiaowan Formation of Gansu, China. One of the most primitive horned dinosaurs known, it was approximately 1m long and bipedal, lacking the elaborate horns and frills of later ceratopsids. Named in 1997, it provides insight into the early evolution of the ceratopsian lineage.

Diet & Feeding

Herbivore

Archaeoceratops oshimai was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Time Period

Cretaceous Early Mesozoic Era

Archaeoceratops oshimai lived during the Cretaceous Early period of the Mesozoic Era, approximately 145.0 to 100.5 million years ago.

The Cretaceous saw continued dinosaur evolution with the rise of ornithopods and early ceratopsians. Flowering plants first appeared and began to transform terrestrial ecosystems. Spinosaurus and other large theropods lived during this time.