0 a group of animals or plants consisting of a shared ancestor and everything that comes from it: --
Its sister clade includes the mammalian taxa, but also some avian schistosomes.
However, all other characters showed numerous homoplastic changes and illustrate an iterative evolutionary scheme within main irregular clades.
The resulting alignments were used to construct a phylogenetic tree resolving five major clades.
Further collections would be needed to see if further clones from these hosts partitioned into this clade.
The challenge in the future will be to match these track types to particular clades of pterosaur.
Reduced-wing or wingless flies are associated with various unrelated clades of bats, seemingly without regard to roosting habits.
Hadrocodium and the mammalian crown-group constitute a clade characterized by various diagnostic apomorphies.
In the insectivore anamniote clades, strong selective pressures were concentrated on the visual system to detect object size and movement.
