Noun: archeopteryx
- Extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds
"The discovery of archeopteryx fossils provided crucial evidence for the evolution of birds from reptiles";
- archaeopteryx, Archaeopteryx lithographica
Derived forms: archeopteryxes
Type of: bird, birdie [informal]
Part of: genus Archaeopteryx, genus Archeopteryx
Encyclopedia: Archeopteryx