_:b665460118 . _:b665460118 . _:b665460118 . _:b665460118 "Parallelism that involves morphologically very similar structures, occurring only within some members of a taxon and absent in the common ancestor (which possessed the developmental basis to develop this character)." . _:b665460118 "ISBN:0199141118" . _:b665460118 . _:b665460118 . _:b665460118 . _:b665460118 . _:b665460118 . _:b665460118 .