- The medial migration of the thoracic artery appears to have some phylogenetic significance as yet not understood. - "Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae", Marion Anne Jenkinson.
- The phylogenetic action of external stimuli gives the definite character of adaptation to the idioplasm as it becomes more complex from inner causes and probably these external stimuli have the power to alter this impress only as new idioplasm is automatically formed. - "A Mechanico-Physiological Theory of Organic Evolution", Carl Von NÃ¤geli.
- A phylogenetic plant system does not exist in fact, but only in figure. - "A Mechanico-Physiological Theory of Organic Evolution", Carl Von NÃ¤geli.