作者根据晚泥盆世在地层中喇叭孔珊瑚在宿主腕足动物壳体上的生长方向、位置及其它状态等的具体分析,判断两者是生前共生还是死后附生。通过对某些腕足动物及其壳体上附着的珊瑚生长阶段、生长方向的分析,恢复了Cyrto-spirifer,Cyrtiopsis,Tenticospirifer及Yunnanellina等属的有利生活方位并验证其固着方式。文中还探讨造成腕足动物贝体两侧不对称的病理性失调和贝体死亡原因。作者认为古生态学的研究应包括古代生物在其被埋藏前的生活状态,居住环境,病理现象及死后的遭遇等全部过程。 Based on the detailed analysis of the growth direction, location and other status of the horn-coral in the strata of the Late Devonian in the strata, the author can determine whether the two are epigenetic or postnatal. By analyzing the growth stages and growth directions of some corals in the Brachiatus and its shell, the favorable life orientation of Cyrto-spirifer, Cyrtiopsis, Tenticospirifer and Yunnanellina were restored and their fixation methods were verified. The article also discusses the cause of asymmetry on both sides of the body of Brachiotech animal pathological disorders and shellfish cause of death. The author thinks that the study of palaeoeology should include the whole process of the living state, living environment, pathological phenomena and the experience of death before the ancient creatures were buried.