The skeletal surface of a coral that in life was in contact with the basal ectoderm of the polyp. It can be quite variable in shape and dimensions, but is commonly saucer- or cup-shaped.
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。