SINOPSIS DEL LIBRO

In the following pages the term skeleton is used in its widest sense so as to include exoskeletal or tegumentary structures as well as endoskeletal structures It was thought advisable to include some account of the skeleton of the lowest Chordataanimals which are not strictly vertebrates but it seemed undesirable to alter the title of the book in consequence The plan adopted in the treatment of each group has been to give first an account of the...Seguir leyendo