The Linnaean system (1758) classified all macroscopic living organisms as either Animals or Plants, based on whether they moved [anima, with a soul] or not. Thus, Fungi were included as plants. With the invention of the microscope and...

This site is a description of the history behind the 5 Kingdom system suggested by Robert Whittaker. An extensive list of resources is included.

[Free Registration/Login may be required to access all resource tools.] Presents an overview of the major animals groups (mammals, birds, reptiles, amphibians, fish, arthropods, vertebrates, invertebrates, those having live births and...

Explore the world of plants and all that encompasses the second biggest kingdom of classification.