noun🔗ShareA taxonomic category below phylum and above class"In biology class, we learned that vertebrates, like humans and birds, are classified in the subphylum Vertebrata, which is a group smaller than the phylum Chordata but larger than the class Mammalia (for humans) or Aves (for birds). "biologyorganismsciencenatureanimalplantChat with AIVocabulary GamePractice Reading