ornithischia defined in 1951 yearornithischia - ornithischia;
ornithischia - Fossil order ofReptilia, formerly part of order Dino-sauria which is now divided into Ornithischia and Saurischia, Lived during Mesozoic. Contains only herbivorous species and none reaching the gigantic size of the biggest Saurischia.
near ornithischia in Knolik
definition of word "ornithischia" was readed 1110 times