kɹˈæsɪdʒˌɪɹɪnəs fɹʌm , θˈɪk ænd  , tˈædpoʊl ɪz ɐn ɛkstˈɪŋkt dʒˈɛnəs ʌv kɑːɹnˈɪvɚɹəs stˈɛm tˈɛtɹɐpˌɑːd fɹʌmðɪ ˈɜːli kˌɑːɹbənˈɪfɚɹəs lˈaɪmstoʊn kˈoʊl ɡɹˈuːp ʌv skˈɑːtlənd ænd pˈɑːsᵻbli ɡɹˈɪɹ, wˈɛst vɜːdʒˈɪniə.
Crassigyrinus (from , 'thick' and  , 'tadpole') is an extinct genus of carnivorous stem tetrapod from the Early Carboniferous Limestone Coal Group of Scotland and possibly Greer, West Virginia.