Row (biology)

by row one understands a stage of classical systematics pushed in between conventional ranks such as class and over class, which are occasionally introduced in biology if no more other ranks are available. An example the land vertebrate animals ( Tetrapoda) form, a Taxon, that between the over class of the Kiefermäuler (Gnathostomata) and the classes of the amphibians (Amphibia), reptiles (Reptilia), birds (Aves) and mammals (Mammalia) one pushes, in order to divide latter groups of the fish.