archeopteryx

Definitions

A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.

Equivalents

Examples

“Since Pterosaurians are triassic and the Archæopteryges jurassic we are justified in regarding the actual chronology of external integument in the geological strata as : first, scale ; second, hair ; and third, feather. This inspires us to make⟳ a wider appeal to geology in order⟳ to have⟳ a comprehensive sketch⟳ of the avian sequence.”

CEFR level