from the GNU version of the Collaborative International Dictionary of English
- n.pl. An extinct order of birds having a long vertebrated tail with quills along each side of it. Archæopteryx is the type. See archæopteryx, and odontornithes.
from The Century Dictionary and Cyclopedia
- A subclass or an order of Aves, of Jurassic age, based upon the genus Archæopteryx, having a long lacertilian tail of many separate bones without a pygostyle and with the feathers arranged in pairs on each side of it, the sternum carinate, the wings functionally developed, and teeth present; the lizard-tailed birds. Also called Saurornithes, and, by Owen, Uroioni.
Sorry, no etymologies found.