Fig. 4: Typical herbaceous fossils and phytoliths from the Dayu section.
From: Rapid Eocene diversification of spiny plants in subtropical woodlands of central Tibet
a–d Phytoliths in different forms extracted from the Dayu sediments. a True saddle; b Rondel; c Elongate; d Bulliform. e, f Herbaceous megafossils from Dayu section. e Sympodial branching; f Wide leaf with parallel veins; g Stem with swollen nodes. For phytolith analysis, we performed three replicate experiments with consistent results. (For a–d, scale bars = 10 µm; for e, f, scale bars = 10 mm).
