Many branches of the territorial administration had great similarities with those of the State, so that their spheres of activity frequently overlapped and came into collision.
There are, indeed remarkable similarities between the external characters of the Phylactolaematous Polyzoa and the Phoronidea, and notably between their lophophores.
Similarities have broken down on close examination.
The question whether similarities in technology argue for contact of tribes, or whether they merely show corresponding states of culture, with modifications produced by environment, divides ethnologists.
Some of the similarities to the Ethiopian and the great differences from the Australian avifauna have already been pointed out.