摘要：The systematics of Triassic corals based on morphological characters (Alloiteau 1952,Wells 1956) has been examined. It has been shown that microstructural characters are more valuable than morphological ones as systematic criteria for scleractinian corals. An outline of Triassic coral evolution has been presented and the premises,on which the classic concept of independent rugosan and scleractinian phylogenies is based,are refuted.
其他摘要：It is conceivable that a range of Triassic coral groups arose from the structural type characteristic of the Pachythecalidae as a result of two evolutionary phenomena: progressive reduction of the wall,and a process of differentiation of the trabecular ax
