1 Phylum Arthropoda. 2 Jointed Appendages 3 Number of species Arthropoda Echinodermata Ciliophora Chordata Mollusca Platyhelminthes Nematoda Porifera.
1 Phylum Arthropoda. 2 Jointed Legs 3 Number of species Arthropoda Echinodermata Ciliophora Chordata Mollusca Platyhelminthes Nematoda Porifera Annelida.
