Well-preserved fossilized pollen grains found in northern Switzerland provide evidence that flowering plants may have originated in the early Triassic between 252 and 247 million years ago, or even earlier. This image shows a 240-million-year-old pollen grain from northern Switzerland, scale bar – 10 μm. Image credit: Hochuli PA and Feist-Burkhardt S. Flowering plants evolved from extinct plants related to conifers, ginkgos, cycads, and seed...
