A group (sometimes given the rank of subkingdom) comprising all multicellular animals, including the Porifera (sponges) and Placozoa, which in some former classifications were placed in a separate subkingdom, Parazoa. Compare eumetazoa.
See animalia.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。