Figure 3. (1) Leaf morphotype RH3 (monocot fragment), USNM 535050. Close-up, showing large A veins (off-white in photo). Between each set of A veins are 1 to 2 smaller-width B veins. Sigmoidal, oblique cross veins are visible between the A-B veins. Scale bar equals 0.2 mm. (2) Leaf of Myrtaceae, USNM 535051. Scale bar equals 1 cm. (3) Close-up corresponding to inset box in (2). Arrow indicates the prominent intramarginal vein receiving numerous fine secondaries and intersecondaries. Scale bar equals 1 mm.