subclass Archaeornithes

Từ điển Oxford Learners Wordfinder Dictionary

noun

primitive reptile-like fossil birds of the Jurassic or early Cretaceous
• Syn:
Archaeornithes
• Hypernyms:
class
• Member Holonyms:
Aves, class Aves
• Member Meronyms:
genus Archaeopteryx, genus Archeopteryx, genus Sinornis, genus Ibero-mesornis, genus Archaeornis