Proavis

词形变化

Proaves 复数 Proaves

别名

Pro-Avis

释义与例句

n.
  1. 1.

    Any of various hypothetical extinct species or taxa that were coined in the early 20th century in an attempt to support and explain the hypothetical evolutionary steps and anatomical adaptations leading from non-avian theropod dinosaurs to birds.

    生物

词源

From pro- (“prior”) + Latin avis (“bird”)

来源：wiktionary