Studies on skeletal growth of Recent and fossil solitary cleractinian corals

基于1090个更新世孤立硬核珊瑚、Caryophyllia (premocyathus) compressa Yabe和Eguchi的标本，研究了种内形态变异。特别注意的是室间隔排列、室间隔数、第三周期室间隔插入模式和室间隔的变化。标本包含九种不同的间隔平面，从六房到十房，其中以十房平面最常见。第三周期间隔在数量和位置上有明显的规律性。第三周期不完整的标本也被认为是成熟的。膈肌的数量和位置与第三周期间隔的数量和插入方式密切相关。在极端情况下，有标本只有两个周期的间隔和缺乏巴利。据认为，在化石种群中存在着99种不同的间隔排列，尽管在收藏中发现了57种。现在的物种包括许多不显示两侧对称的标本。

Intraspecific morphological variations have been investigated based on 1090 specimens of a Pleistocene solitary scleractinian coral, Caryophyllia (premocyathus) compressa Yabe and Eguchi. Spcial attention has been paid to variations in septal arrangements, septal numbers, insertion patterns of third-cycle septa, and pali. The specimens contain nine: different septal plans from hexameral to decatetrameral, among which those having a decameral plan are the most common. There is a clear regularity in number and position of the third-cycle septa. Specimens in which the third cycle is incomplete are also considered to be mature forms. Number and position of pali are intimately related to the number and insertion pattern of the third-cycle septa. In extreme cases, there exist specimens having only two cycles of septa and lacking pali. Ninety-nine varieties in septal arrangements are considered to be present in the fossil population, although 57 have been found in the collection. The present species includes many specimens which do not show bilateral symmetry.