Animals of the Past

Written when 'dinosaur' was still a new word in most homes: the American Museum's own guide to sea-serpents of Kansas, birds with teeth, and why great creatures vanish — with Charles R. Knight's famous restorations.

The Ancestry Of The Horse

3 pages in this part of Animals of the Past.

The Ancestry Of The Horse

"Said the little Eohippus I am going to be a horse And on my middle finger-nails To run my earthly course."

The Ancestry Of The Horse: Europe

The very first links in this chain are the remains of the bronze age and those found among the ruins of the ancient Swiss lake dwellings…

The Ancestry Of The Horse: Teeth

Quaternary Age of Man or Recent Pleistocene THE EVOL Formations in Western United States and Characteristic Type of E Tertiary Or BLANCO…

Rights & ReuseThe complete text of Animals of the Past (1901) is in the public domain in the United States — like all works published before 1928 — and is free to read, download, quote, teach from, and reuse. This digital edition (its transcription, restored plates, and site design) is © 2026 PhotoOpAI, and any editorial commentary we add is clearly marked as ours; the underlying public-domain text carries no such restriction.