He developed the system whereby every known living creature is assigned to a kingdom, phylum , class, order, family, genus, and species.
Within a phylum , however, it may also be necessary to recognize some languages that have no close relatives and do not fall into families.
Na-Dene is one of the most widely distributed language phyla in North America.
The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.
Arthropods, chordates and annelids are the three segmented phyla in the animal kingdom.
Of particular interest in this regard are animals in the early diverging non-bilaterian phyla Porifera, Placozoa, Cnidaria, and Ctenophora.
In the animal kingdom there are many phyla , and the mammals come into a phylum called the chordates.