The Deseado Formation of Patagonia

Frederic Brewster Loomis, Ph.D.
Professor of Comparative Anatomy Amherst College
EIGHTH AMHERST EXPEDITION 1911
PUBLISHED UNDER THE AUSPICES OF THE TRUSTEES OF AMHERST COLLEGE 1914
Copyright, 1914 By Frederic B. Loomis
THE RUMFORD PRESS CONCORD · N · H ·
The results of the Amherst Patagonian Expedition were divided into two parts, the general features, together with the narrative, were reported in a separate volume entitled, “Hunting Extinct Animals in the Patagonian Pampas,” published in 1913. For this volume has been reserved the description of the material found and such conclusions as are directly derived from that material. The material on which this work is based has been prepared out and placed on exhibition at Amherst College.
The material here described forms a unified body of data, which adds materially to our knowledge of the complete animals of the Tertiary period in Patagonia. There are beside this some small collections which offer some isolated new facts, but the working up of these has been reserved for the future for small articles, as the work may come to maturity.
The field has only been touched and a vast amount of further work can be profitably done on the horizons immediately preceding and following the one described in this volume, after which an interesting study can be made on the evolution of a fauna which developed in a considerable degree of isolation.
F. B. Loomis.
March 18, 1914.