noun
Meaning 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.
Definition source: English Wiktionary via Wiktextract
Topics: biology, history, human-sciences, natural-sciences, paleontology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided