CINCINNATI -- He was known as The Cobra. Dave Parker was an intimidating force when he wielded that 37-ounce bat during the 1970s and '80s for six Major League teams, including the Pirates and Reds.
The taxon of aquatic animals is a taxon. A clade is a monophyletic taxon or monophyletic group if you prefer. A monophyletic taxon (or a clade) is defined as a taxon that contains only all descendants of a common ancestor and the common ancestor.
Phylogeny uses evolutionary distance, or evolutionary relationship, as a way of classifying organisms (taxonomy). Phylogenetic relationship between organisms is given by the degree and kind of evolutionary distance. To understand this concept better, let us define taxonomy. Taxonomy is the science of naming, classifying and describing organisms. Taxonomists arrange the different organisms in taxa (groups).