The Ginkgoaceae is a family of gymnosperms which appeared during the Mesozoic Era, of which the only extant representative is Ginkgo biloba, which is for this reason sometimes regarded as a living fossil. Formerly, however, there were several other genera. Principal genera Baiera † Ginkgo Ginkgoites † Ginkgoïdium † Phoenicpsis † Polyspermophyllum † Trichopitys †… (More on Ginkgoopsida)