Modifiers matching amniote:

• lower,
• higher,
• aquatic,
• oviparous,
• extinct,

Simple categories matching extinct:

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