It was collected during a 1966–1967 expedition but not named and described until recently. Paul Sereno, who had recognized it as unusual in the 1980s, published a description in 2012. The type species is P. africana. Pegomastax differed from other heterodontosaurs by details of the skull. The lower jaw was robust, with a short beak. Like most other heterodontosaurs, Pegomastax had an enlarged canine-like tooth at the beginning of the lower jaw's tooth row, which may have been used for defence. The rest of its teeth were those of a herbivore.
References[change | change source]
- Sereno, Paul C. (2012). "Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs". ZooKeys. 226: 1–225. doi:10.3897/zookeys.226.2840. Unknown parameter
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- BBC News: Science & Environment. Dwarf 'vampire' dinosaur was a plant eater.