In the book "A New Genus of Pennsylvanian Fish (Crossopterygii, Coelacanthiformes) from Kansas", the author Joan Echols reveals the study of a new genus of ancient fish belonging to the extinct group Coelacanthiformes. The book details the discovery of a new species of fish made in Kansas, establishes its place in the evolutionary chain of fishes, and examines its anatomical features and habitat in the Late Carboniferous period, which has come down to us in the sediments of the state of Kansas. Joan Echols details the research methods that led to the origin of this new genus and draws conclusions about its significance for ancient fish science. The author's work is marked by academic thoroughness, innovation in the approach to publishing, and the combination of scientific data with accessibility for a wide audience, which makes her book interesting for both specialists and the general public.