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Fig. S1 The component community of arthropod herbivores on Middle Devonian Metzgeriothallus sharonae.

Fig. S2 A comparison of DT273 on the liverwort Metzgeriothallus sharonae from the late Paleozoic of New York state, with published late Paleozoic and modern piercing-and-sucking damage on a variety of land plants.

Table S1 Comparison of various cross-sections of stylet marks indicating piercing-and-sucking damage from late Paleozoic and modern plant hosts

Notes S1 New damage type DT273.