The Succession of Mammalian Forms within the Period in which Human Remains are Known to Occur in America

Abstract

This paper is divided into two parts with a view to presenting first some general considerations which merit attention in the present study of the succession of mammalian life for the later Quaternary and, secondly, some facts which relate more specifically to the title of the ad- dress. It is a pleasure to acknowledge my indebtedness to Dr. John C. Merriam for the opportunity to discuss these topics at a symposium on "Early Man in America," with particular reference to the southwestern United States, before the American Society of Naturalists.