Animal magic: Asteroids and meteoroids may only be classified in terms of a fixed range of animal sizes, but giraffes are excluded. (Courtesy: iStock/naeblys) A new system for classifying the sizes of ...

A tabular comparison of the classification of the orders and families of flowering plants by Cronquist, Takhtajan, Thorne, Engler, Hutchinson, and Bentham & Hooker is presented. The linear sequence of ...