Saurischia saurischia • saurischian · · · Info · Definitions · Characters · · Saurischia · · Text Latin · · Script 10 · · Length 5 · · Syllables Definitions · · · (noun) extinct terrestrial reptiles: theropods (carnivorous); sauropods (herbivorous). Synonyms: order Saurischia. · · Noun Definition 1 Characters · · S latin capital letter s U+0053 a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 i latin small letter i U+0069 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075