Adjective
Of or pertaining to a single family or stock, or to development from a single common parent form; -- opposed to polyphyletic; as, monophyletic origin.
Source: Webster's dictionaryA family is a monophyletic unit; all its members derive from a common ancestor, and all attested descendants of that ancestor are included in the family. Source: Internet
Cavalier-Smith does not accept the requirement for taxa to be monophyletic ("holophyletic" in his terminology) to be valid. Source: Internet
By the early 21st century, vertebrate paleontologists were beginning to adopt phylogenetic taxonomy, in which all groups are defined in such a way as to be monophyletic ; that is, groups include all descendants of a particular ancestor. Source: Internet
For example, of the 36 genera in the subfamily Cactoideae sampled in the research, 22 (61%) were found not monophyletic. Source: Internet
Are crocodiles really monophyletic? Source: Internet
A study in 2008, using a larger set of genes, concluded that the lophophorates were closer to the Lophotrochozoa than to deuterostomes, but also that the lophophorates were not monophyletic. Source: Internet