hBacteria were first classified as plants constituting the class Schizomycetes, which along with the Schizophyceae (blue green algae/Cyanobacteria) formed the phylum Schizophyta.
In taxonomy, a phylum is a group of organisms above classes, orders, families, genera, and species, but below domains and kingdoms. In addition to Mollusca, Chordata, and Arthropoda, there are many other types of phyla.
