Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Elasmobranchii () is a subclass of Chondrichthyes or cartilaginous fish, including the sharks (superorder Selachii) and the rays, skates, and sawfish (superorder Batoidea). Nhengo dzechikamu chechikamu ichi dzinozivikanwa nokuva nemapara mashanu kusvika kuanomwe echikanda chinovhurika nechokunze, mahwanda akasimba uye mapoka maduku echikanda. Mazino acho ari mumitsara inoverengeka; shaya yokumusoro haina kubatanidzwa neganda romusoro, uye shaya yokumusoro yakabatana neyokumusoro. Tsanangudzo dzechimiro chemuzongoza uyu dzinosiyana-siyana pakati pemarudzi, uye dzinobatsira kusiyanisa mapoka akasiyana-siyana eelasmobranch. Mapepa omumhino dzomunhurume akagadziridzwa kuti agadzire zvipfigiso zvokuchinjisa urume. Hapana tsinga yokushambira; panzvimbo pezvo, hove idzi dzinoramba dzichiyangarara nechiropa chakakura chine mafuta akawanda.  Mubvunzo: Ndeipi mimwe mienzaniso yeChondrichthyes?
shark (superorder Selachii) uye rays, skates, uye sawfish (superorder Batoidea)