Modifiers matching dinosaur:

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

Simple categories matching bipedal:

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