bird-kingdom

Updated: May 17, 2025

We cannot suppose that every type has been preserved, but we see that our bird-world was virtually created in the early part of the Tertiary Era. With these more or less familiar types were large ostrich-like survivors of the older order. The absence of early Eocene remains prevents us from tracing the lines of our vast and varied bird-kingdom to their Mesozoic beginnings.

Joseph McCabe - The Story of Evolution