A Jurassic flower bud from China

Abstract Angiosperms may be distinguished from their gymnosperm peers by flowers, and thus a flower is good proxy of fossil angiosperms. However, flowers parts are usually too frail to preserved in the record. This makes origin angiosperms foci controversy botany. Eliminating such botanical controversies can only achieved studying related plant fossils. Applying routine scanning electron microscopy, light microscopy micro-computed tomography (micro-CT) technologies, we document bud, Florigerminis jurassica gen. et sp. nov., Jurassic Inner Mongolia, China. includes not leafy branch but also physically connected fruit bud. The developmentally interpolated existence blooming between bud mature suggests that angiosperm were present Jurassic, agreement with recent progress. underscores presence demands rethinking evolution.