A group of extinct or ancient birds characterized by certain anatomical features considered primitive or early in avian evolution.
From Greek eu- (well, true) + ornis (bird) + -es (plural). A paleontological term grouping birds by evolutionary characteristics.
Euornithes classification shows how paleontologists debate bird evolution—are we looking at 'true birds' or 'early birds,' and the line between them gets blurrier as we discover more fossils.
Complete word intelligence in one call. Free tier — 50 lookups/day.