English
protobird
From proto- + bird.
Today it means
noun Any of several extinct animals proposed as an evolutionary link between fossil reptiles and fossil birds; a proavian.
Sources
Sources: Wiktionary, “protobird”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / protobird