The Nemertea phylum comprises approximately 1300 species.
The predominance of Proteobacteria in such environments could be explained by the fact that this phylum comprises the most phylogenetically diverse group in the Bacteria Domain, known to be metabolically versatile, including aerobic and facultative aerobic bacteria (Madigan et al. 2008).
This phylum comprises oxygenic photosynthetic prokaryotes [53].
This phylum comprises many members of entirely parasitic diseases of humans and animals with a wide environmental distribution.
The marine diatom, Phaeodactylum tricornutum, is classified in the phylum Bacillariophyta, and this phylum comprises one-third of all known marine phytoplankton.
The genus Capnocytophaga, in the Bacteroidetes phylum, comprises capnophilic gram-negative bacteria that live as host-specific commensals in the oral cavities of mammals.
Cushitic languages, a division of the Afro-Asiatic phylum, comprising about 40 languages that are spoken mainly in Ethiopia, Eritrea, Djibouti, Somalia, and northwestern Kenya.
Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms.
The Firmicutes is the largest bacterial phylum, comprising over 200 genera, including Lactobacillus, Mycoplasma, Bacillus, and Clostridium species.
In the Chlorophyta – the green algal phylum comprising the classes Prasinophyceae, Ulvophyceae, Trebouxiophyceae and Chlorophyceae – the chloroplast genome displays a highly variable architecture.
Molluscs are the second largest animal phylum, comprising about 7% of living animals and occupying habitats ranging from high alpine regions to deep sea vents, with a diverse range of lifestyles including predatory, scavenging, herbivorous, detritivorous and filter-feeding [ 1].
