Proavis (English, noun)
expansion: Proavis (plural Proaves)
Senses:
topics: biology
history
human-sciences
natural-sciences
paleontology
sciences
glosses: 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.
Forms:
form: Proaves
tags: plural
form: Pro-Avis
tags: alternative