Modifiers matching dinosaur:

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

Simple categories matching bipedal:

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