Modifiers matching dinosaur:

• cretaceous,
• armored,
• carnivorous,
• horned,
• large,
• bipedal,
• flying,
• prehistoric,
• herbivorous,
• quadrupedal,
• jurassic,
• aquatic,
• huge,
• new,
• necked,
• small,
• extinct,

Simple categories matching bipedal:

• predator,
• being,
• carnosaur,
• creature,
• mammal,
• dinosaur,
• animal,