Modifiers matching amniote:

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

Simple categories matching extinct:

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