metallosphaera metallosphaera in taxonomy, metallosphaera is a genus of the sulfolobaceae. metallosphaera scientific classification domain: archaea phylum: thermoproteota class: thermoprotei order: sulfolobales family: sulfolobaceae genus: metallosphaerahuber, spinnler, gambacorta & stetter 1989 type species metallosphaera sedulahuber et al. 1989 species m. cuprina m. hakonensis m. prunae m. sedula m. tengchongensis "m. yellowstonensis"