English: Figure 1. Radula cretacea sp. nov. from Cretaceous Burmese amber (PB22484). (a) Overview of the fossil. (b) Upper portion of shoot with female bract pairs. The white arrowhead points to the outer bract; the black arrowhead points to the inner female bract. (c–e) Gemmae in different developmental stages. (f) Portion of the shoot. Two fern sporangia (encircled) are attached to the stem of the Radula fossil. (g) Leaf. Note the acute leaf apex and gemmae development at its margin. The arrowhead points to a degraded fern sporangium. Scale bars: (a) 500 µm, (b, f) 200 µm, (g) 150 µm, and (c, d, e) 20 µm. (a–e, g) Fossil in ventral view and (f) in dorsal view.