Thermotoga
Thermotoga is a genus of the phylum Thermotogota. Members of Thermotoga are hyperthermophilic bacteria whose cell is wrapped in a unique sheath-like outer membrane, called a "toga".
The members of the phylum stain Gram-negative as they possess a... Wikipedia
Higher classification: Thermotogaceae
Domain: Bacteria
Order: Thermotogales
Phylum: Thermotogota
Scientific name: Thermotoga
Genus: Thermotoga; Huber et al. 1986