Preliminary Report of Fossil Mammals from Puerto Rico: With Descriptions of a New Genus of Ground Sloth (1916) is a scientific book written by Harold Elmer Anthony. The book is focused on the study of fossil mammals found in Puerto Rico, and it includes a detailed description of a new genus of ground sloth. The author provides a comprehensive analysis of the mammalian fossils found in Puerto Rico, including their taxonomy, morphology, and distribution. The book is an essential resource for paleontologists, zoologists, and other scientists interested in the study of mammalian fossils and their evolution. The author's writing style is clear and concise, making the book accessible to a wide range of readers. Overall, Preliminary Report of Fossil Mammals from Puerto Rico is a valuable contribution to the field of paleontology and an important reference for anyone interested in the study of fossil mammals.And Two New Genera Of Hystricomorph Rodents.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.