Osteostraci

Từ điển Oxford Learners Wordfinder Dictionary

noun

extinct group of armored fish-like vertebrates;
taxonomy is not clear
• Syn:
suborder Osteostraci, Cephalaspida, suborder Cephalaspida
• Hypernyms:
animal order
• Member Holonyms:
Ostracodermi, order Ostracodermi
• Member Meronyms:
osteostracan, cephalaspid