Book A. N. Northerners . Collection of Works . T. 2. The origin and evolution of limbs" is a fascinating and in-depth study that immerses the reader in the world of biology and evolution, revealing the mysteries associated with the development of limbs in various species of animals. The author of this work is a team of researchers inspired by the legacy of the outstanding Russian zoologist and evolutionist Alexei Nikolaevich Severtsov, whose work has become fundamental in the field of comparative anatomy and evolutionary biology. The book is the second volume of the collection of works, which contains not only the original works of Severtsov, but also modern interpretations of his ideas, supplemented by new data and discoveries. This edition will be especially interesting for those who are fond of biology, zoology, paleontology and evolutionary sciences. Students, graduate students and teachers, as well as anyone interested in the animal world and its history, will find in this book a lot of useful and fascinating materials. One of the main topics raised in the book is the question of how and why animal limbs evolved in response to environmental changes and the need for survival. The reader will be able to learn about how different species have adapted to their habitats, what mechanisms underlie these changes, and how they relate to the general principles of evolution. The book is replete with examples from the world of living nature, which makes the material accessible and understandable even for those who do not have deep knowledge in the field of biology. The style in which the book is written is distinguished by scientific rigor and at the same time accessibility. The authors strive to convey complex ideas in a simple and understandable language, which makes the text fascinating and easy to understand. This is especially important for readers who may not be familiar with highly specialized terminology, but are keen to expand their knowledge of the wildlife world. Book A. N. Northerners . Collection of Works . T. 2. The origin and evolution of limbs not only continues the tradition of Severtsov’s scientific heritage, but also contributes to the modern understanding of evolutionary processes. It raises important questions about the relationship between structure and function, and how anatomical changes can affect animal behavior and lifestyle. These topics are relevant not only for scientists, but also for a wide audience interested in the issues of nature and its laws. If you are looking for literature that combines scientific rigor and a fascinating account of nature, then this publication will be a real find for you. It will allow you to look at evolution from a new perspective and understand how the diversity of life forms is related to their history and environment. The book will be of interest not only to specialists, but also to everyone who wants to deepen their knowledge about nature and evolution. Therefore, "A. N. Northerners . Collection of Works . T. 2. The origin and evolution of limbs is not just a scientific work, but an exciting journey into the world of biology, which will leave the reader with many questions and inspiration for further study.