Category Nuances matching chordate:

• lower,
• primitive,
• cellular,
• invertebrate,
• higher,

Members for simple category chordate:

• primates,
• amphioxus,
• tunicate,
• urochordate,
• lancelet,
• amphibian,
• cephalochordate,
• ascidian,
• reptile,
• fish,
• bird,
• cephalochordate_amphioxus,
• lamprey,
• lancetfish_amphioxus,
• mammal,
• dogfish_gray,
• ascidian_larva,
• hagfish,