 Gymnosperms were relatively diverse during the Jurassic period.The Conifers in particular dominated the flora, as during the Triassic; they were the most diverse group and constituted the majority of large trees.Extant conifer families that flourished during the Jurassic included the Araucariaceae, Cephalotaxaceae, Pinaceae, Podocarpaceae, Taxaceae and Taxodiaceae.