The book "Monograph of Trilobites of North America: With Color Models of the Species" by Jacob Green is an important source for the study of trilobites in North America. In this book, the author explores in detail the various species of trilobites present on this continent, providing readers with comprehensive information on their classification, anatomy and distribution. Color models of species help to better imagine these ancient inhabitants of seawater, their features and characteristics. Thanks to this book, you will have the opportunity to better understand the world of trilobites and immerse yourself in the fascinating world of the ancient fauna of North America.