ðəlˈoʊdəs fɹʌm  , nˈɪpəl ænd  , tˈuːθ ɪz ɐn ɛkstˈɪŋkt dʒˈɛnəs ʌv ðəlˈɑːdɔnt ˈæɡnəθən ðæt lˈɪvd dˈʊɹɹɪŋ ðə sɪlˈʊɹɹiən pˈiəɹɪəd.
Thelodus (from  , 'nipple' and  , 'tooth') is an extinct genus of thelodont agnathan that lived during the Silurian period.