Figure 10. Leaf morphotypes RH04 and RH05. (1) Leaf morphotype RH04, USNM 535058, showing convex, interior secondary veins between two primary veins. Scale bar equals 1 cm. (2) Inset for venation detail, showing unusually good preservation of higher venation for this flora; the tertiary and quaternary veins are random reticulate. Scale bar equals 1 mm. (3) Leaf morphotype RH05, USNM 535059, presumed to be a left lateral lobe. Note the difference in secondary vein divergence angle on either side of the primary, and the lobe sinus portion indicated by arrow. Scale bar equals 1 cm. Inset for (4) detail of primary vein with departing secondaries, showing greater divergence angle to right than to left of primary. Scale bar equals 0.2 mm.