Haeckel was also an active atheist.He often cited the evolution theory in his verbal and literary attack on religion. 海克爾還是一個激進的無神論者，經常引用達爾文的生物進化論抨擊宗教。
In this paper, according to the study of the achievments of palacontology and modern evolution, the theory about the inside indistinction in the relation of fossils and evolution. 摘要根據現代生物進化論和古生物學成就，就化石與生物進化關係的內在模糊性予以論述。
