A Revision Of The Genera And Great Groups Of The Echinoidea is a book written by Peter Martin Duncan in 1889. This book is a detailed study of the echinoderms, specifically the echinoidea, which are a group of sea urchins. The author provides a comprehensive analysis of the classification of the echinoidea, including the different genera and great groups. The book is written in a scientific style and includes detailed descriptions of the physical...