Modifiers matching archosaur:

• extinct,

Simple categories matching extinct:

• mammal,
• plant,
• amniote,
• animal,
• herbivore,
• creature,
• giant,
• bird,
• human,
• fauna,
• organism,
• beast,
• dinosaur,
• reptile,
• equid,
• archosaur,
• ratite,
• predator,
• relative,
• vertebrate,