湖南异珊瑚目的新材料——兼论异珊瑚目的构造

记述了湖南渣渡早石炭世维宪期异珊瑚6属: Hexaphyllia, Pentaphyllia, Haptaphyllia, Heterophyllia, Nodohexaphyllia gen. nov. 及 Nodopentaphyllia gen. nov..根据这些珊瑚的内部构造形态,特别从出芽繁殖幼体的构造形态,对异珊瑚轴管的形成、横板的生长形态、隔壁的生长起点及体壁组成的因素等提出了一些新的见解.

异珊瑚目的地史分布与化石组合

异珊瑚化石始发现于早泥盆世 ,早石炭世为鼎盛时期 ,至早二叠世末全部绝灭。本研究将异珊瑚划分为 4个化石组合 ,并对异珊瑚的起源、分布及迁移规律及生态环境等进行了讨论。化石组合由老至新分别为 :早泥盆世 Tetraphyllia组合 ;晚泥盆世 Oligophylloides-H eterophyllia组合 ;早石炭世 Pentaphyllia-H exaphyllia-Radiciphyllia 组合 ;早二叠世 Dichophyllia-H eterophyllia-H exaphylloides组合。并指出异珊瑚属于热带—亚热带至暖温带的生物类群 。

EARLY CARBONIFEROUS HETEROCORALLIA FROM GUILIN AREA IN GUANGXI

Samples of the Heterocorallia described in this note were collected from Thysanophylloides zone of the Huangjin Member of Datang Stage, Lower Carboniferous in Mopanshan, Guilin, Guangxi. Here Heterocorallia is abundant. It consists of 3 genera 5 species (including 4 new species), 1 subspecies and 1 indeterminate species. At present these are at the lowest horizon occurring at the Oatang Stage of the Carboniferous of China.