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.
HOMOLOGY. In biology, a HOMOLOGY is a characteristic shared by two species (or other taxa -- a taxon is the generic term for a classification group such as a Kingdom, a Phylum, etc.) that is similar because of common ancestry.ou can't call something primitive or derived without comparing it to something else. Biosystematists often use the existence of shared characters in related taxa to help reveal their common ancestry. 1  a SYMPLESIOMORPHY is a shared, primitive character. 2  a SYNAPOMORPHY is a shared, derived character.