caldisphaera caldisphaera in taxonomy, caldisphaera is a genus of the caldisphaeraceae. caldisphaera scientific classification domain: archaea kingdom: proteoarchaeota superphylum: tack group phylum: thermoproteota class: thermoprotei order: sulfolobales family: acidilobaceae genus: caldisphaeraitoh, suzuki, sanchez & nakase 2003 type species caldisphaera lagunensisitoh et al. 2003 species "c. dracosis" boyd et al. 2007 c. lagunensis itoh et al. 2003