Saurischians are known from specimens ranging from the Late Triassic to the present day, because, as will be seen, birds are highly derived saurischian dinosaurs.
In contrast to the crested rat, skunks synthesize their toxins from scratch, yet they, too, have taken chemical defense to a highly derived, almost mannered extreme.
The human CNS follows a pattern of development typical of all mammals, but certain neurodevelopmental features are highly derived.
Even a former protistan phylum, the Myxozoa has been discovered to be a highly derived parasitic group of Anthozoan Cnidarians (Ruppert et al. 2004).
For example, an amphicribral bundle may become or appear collateral to its extremity or in highly derived taxa (For example, Araliaceae of Apiales) (Nuraliev et al. 2011).
Beardworms (pogonophorans) and spoonworms (echiurans) were previously separate phyla, but are now known to be highly derived Annelids (Lecointre and Guyader 2006).
The only exception of craniofacial under-representation in South America is the extreme, highly derived set of traits observable among Eskimo and Aleutian populations.
The condition of the arteries in the head is highly derived.
American paddlefish are a highly derived fish because they have evolved with adaptations such as filter feeding.
Phylogenetic analysis has demonstrated that the Microsporidia, unicellular parasites of animals and protists, are fairly recent and highly derived endobiotic fungi (living within the tissue of another species).
The Tetraodontidae, known as pufferfishes, are highly derived euteleosts.
