Ginkgoalean ovulate organs and seeds associated with Baiera furcata-type leaves from the Middle Jurassic of Qinghai Province, China

Yimaia ovulate organs and vegetative leaves dominantly of the Baiera-type appear to form a regular combination in the Mesozoic ginkgoaleans. They represented a rather small, but coherent plant group (Yimaiaceae) that was widely distributed in the Jurassic of Eurasia.