The grass phytoliths consist of forms produced by C3/C4 PACCAD grasses and pooids, with a minor component of morphotypes thought to derive from closed-habitat grasses.

• 草本植物的植硅体主要来自于C3/C4科的PACCAD类群和早熟禾亚科的植物，少数可能来自于在林下封闭生活环境中生长的草本植物。