Second-largest phylum in number of species- over 100,000 described.
1 Phylum Mollusca BIO 2215 Oklahoma City Community College Dennis Anderson.
1 Phylum Mollusca. 2 3 Numbers of species Echinodermata Ciliophora Chordata Mollusca Platyhelminthes Nematoda Porifera Annelida Other Apicomplex Sarcomastigophora.
