Cycloclasticus  Cycloclasticus is a genus in the phylum Proteobacteria (Bacteria). The name "Cycloclasticus" derives from:Greek noun "kuklos", circle or ring; New Latin adjective "clasticus" -"a" -"um" (from Greek adjective "klastos" -"ē" -"on", broken in pieces), breaking; New Latin masculine gender noun "cycloclasticus", ring-breaker. The genus contains a single species, namely "C. pugetii" ( Dyksterhouse "et al". 1995, (Type species of the genus).; New Latin genitive case masculine gender noun "pugetii", of Puget, named in honor of Peter Puget, a British naval officer who participated in the Vancouver Expedition and for whom Puget Sound was named.) Other candidate species, e.g., "C. spirillensus," have not been formally recognized. "C. spirillenus" is notable for its spirillum morphology.