Cardiograptus是什么意思

用法例句

The systematic positions of these three genera Pyrenaria,Tutcheria and Parapvrenaria have been studied in this paper based on these data of mopohology, embryology,palynology and anatomy.

）、石笔木属（ＴｕｌｃｈｅｒｉａＤｕｎｎ）和拟核果茶属（ＰａｒａｐｙｒｅｎａｒｉａＨ。