层孔虫研究进展与展望*
董俊彦, 龚一鸣

Progress and prospects of studies on stromatoporoids
Dong Jun-Yan, Gong Yi-Ming
以垂直高度(V)、基底长度(B)和对角线距(D)为端点的层孔虫形态三角分类图(据 Kershaw,1984 )