1. Plural of archaeopteryx; extinct bird-like dinosaurs from the Jurassic period that had feathers, wings, and teeth, considered transitional forms between dinosaurs and modern birds.
Usage: paleontology; scientific term; also spelled archaeopterixes

Examples

• Archaeopteryxes are among the most important fossils for understanding the evolution of birds.
• The discovery of archaeopteryxes provided crucial evidence linking dinosaurs to modern avian species.
• Scientists have studied archaeopteryxes to learn how feathers and flight evolved.
• Multiple specimens of archaeopteryxes have been found in Bavarian limestone deposits.
• Archaeopteryxes possessed both reptilian and avian characteristics.