👉 The term "ornithosaurian" refers to a group of extinct birds that lived during the Late Cretaceous period, around 66 million years ago. The term is often used in the context of paleontological research and has been named after the type species of this group, which was discovered by David E. Wilson in 1975. Ornithosaurian fossils have been found across various regions, including North America, Europe, Asia, and Australia, and they are
