FIGURE 34. A in Diptera of the middle Eocene Kishenehn Formation. I. Documenting of diversity at the family level

FIGURE 34. A thin plate spline analysis demonstrates the direction of the changes from fossil to modern wing veination. 1, Wing of modern Lonchoptera sp. (from the Puyehue National Park, Chile), showing placement of landmarks; 2, Expansion (red) and compression (blue) of wing venation of a modern species of Lonchoptera relative to Lonchoptera eocenica. Basal, left; distal, right. Base of lines represent fossil landmark; dots at tips of lines represent modern landmark.