👉 The term "ornithopoda" refers to a group of birds that have feathers and are characterized by having long, slender wings. These birds were known as dinosaurs and lived during the Mesozoic era (around 68 million years ago). Some examples of ornithopods include: - Tyrannosaurus rex - Brachiosaurus - Triceratops - Allosaurus - Plesiomorpes - Megalosaurus