Figure 4
From: The arrival of millets to the Atlantic coast of northern Iberia
(A–L) Starch grains embedded in El Espinoso's dental calculus in light microscope and polarised light microscope. (A–H) Polyhedral starch grains with central hilum and fissures associated with the Paniceae tribe; (I–L) Round to oval starch grains "bimodal distribution" consistent with the Triticeae tribe. (Scale bar, 20 μm).
