摘要
The paper discusses the characteristics of the trigonioidacean evolution, including stagecharacter, pattern of the punctuated equilibria, periodic reappearance phenomenon of similarmorphology and synchronous orientation parallelism.This indicates that the trigonioida-ceans were themselves the material foundation cf their evolution.It is pointed out that thecharacteristics reflect the regularity of their genetic material mutations.
The paper discusses the characteristics of the trigonioidacean evolution, including stage
character, pattern of the punctuated equilibria, periodic reappearance phenomenon of similar
morphology and synchronous orientation parallelism.This indicates that the trigonioida-
ceans were themselves the material foundation cf their evolution.It is pointed out that the
characteristics reflect the regularity of their genetic material mutations.