古羊齿

gǔ yáng chǐ
  • archaeopteris
古羊齿古羊齿
古羊齿[gǔ yáng chǐ]
  1. 江宁五通群上部古羊齿及其植物化石组合

    Archaeopteris and its plant fossil assemblage in the upper part of Wutong group