allosaurusyoudaoicibaDictYouDict
"A large bipedal carnivorous dinosaur of the late Jurassic period", Modern Latin, from Greek allos 'other' + sauros 'lizard'.
coelurosauryoudaoicibaDictYouDict
"A small, slender bipedal carnivorous dinosaur with long forelimbs, believed to be an evolutionary ancestor of birds", 1950s: from Greek koilos 'hollow' + oura 'tail' + sauros 'lizard'.