diprotodons diprotodont dirtportion disporopsis disposition dispositios dispositors distortions ditropopsis inonotopsis insinoori iridosornis iridotriton isonitroso- nonsponsors notodontids notodontoid odin-osiris odododiodoo opinionists oppositions ottistirini pip-pip-pip pitsi-pitsi pontoporiid portionists potoooooooo prison-door proportions proposition protonopsis rin-tin-tin sindoropsis sitsiritsit sososorosis spirotropis spit-poison spoonssnoop tinodontids toniniopsis triodontids triodontoid trissodoris trois-ponts troodontids