1. Plural of protoceratops; small herbivorous dinosaurs from the Cretaceous period, known from fossils found in Mongolia.
Usage: paleontology; scientific term; plural form

Examples

• Protoceratopses were among the smallest known dinosaurs, weighing only a few kilograms.
• Fossils of protoceratopses have provided scientists with valuable information about dinosaur growth and development.
• The discovery of protoceratopses eggs in Mongolia revolutionized our understanding of dinosaur reproduction.
• Protoceratopses lived during the Late Cretaceous period, approximately 80 million years ago.
• Many protoceratopses specimens have been found in the Gobi Desert, preserved in sandstone deposits.