The Middle Triassic Marine Invertebrate Faunas of North America is a scientific book written by James Perrin Smith and published in 1914. The book is a comprehensive study of the marine invertebrate fauna that existed in North America during the Middle Triassic period, which occurred approximately 240 million years ago. The book provides a detailed analysis of the various species of marine invertebrates that lived during this time, including descriptions of their morphology, taxonomy, and distribution. The author also discusses the geological and paleontological context of the Middle Triassic period, including the environmental conditions that existed at the time. The book is a valuable resource for scientists, researchers, and students interested in the study of marine invertebrates and the history of life on Earth.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.