Figure 4 in The first xiphydriid wood wasp in Cretaceous amber (Hymenoptera: Xiphydriidae) and a potential association with Cycadales

Figure 4. (a) Partial view of Paraxiphydria resinata gen. et sp. nov. and adjacent aggregations of pollen grains. (b) Enlargement of an aggregation of many pollen grains. (c) Enlargement of an aggregation of many pollen grains. (d) Enlargement of (b), showing an aggregation of many pollen grains. (e) Enlargement of (d), showing a single dehydrated/dry pollen grain in distal polar view with a clear sulcus. (f) Enlargement of (d), showing a single (semi-)hydrated pollen grain in equatorial view with the short axis facing the observer. (g) Enlargement of (d), showing a single (semi-)hydrated pollen grain in equatorial view with the long axis facing the observer. (h–j) Extant pollen grains of Cycas revoluta Thunb. (Cycadales: Cycadaceae). (i) Enlargement of a single grain in polar view. (j) Enlargement showing two pollen grains in equatorial view with the long axis facing the observer (upper left) and in oblique polar view (lower right). (k–m) Enlargement of (a), showing an aggregation of many pollen grains under confocal laser microscope. (l–m) Enlargement of (k), showing several pollen grains in distal polar view; note the large elliptic sulcus that covers most of the distal half of the pollen. Scale bars, 0.2 mm (a), 0.05 mm (b, c), 0.02 mm (d, h, k), 0.01 mm (e–g, i, j, l, m).