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Gymnosperms

      The gymnosperms are a group of seed-bearing plants that includes conifers, cycads, Ginkgo, and Gnetales. The term "gymnosperm" comes from the Greek word gymnospermos (γυμνόσπερμος), meaning "naked seeds", after the unenclosed condition of their seeds (called ovules in their unfertilized state). Their naked condition stands in contrast to the seeds or ovules of flowering plants (angiosperms), which are enclosed during pollination. Gymnosperm seeds develop either on the surface of scale- or leaf-like appendages of cones, or at the end of short stalks (Ginkgo). The gymnosperms and angiosperms together comprise the spermatophytes or seed plants. By far the largest group of living gymnosperms are the conifers (pines, cypresses, and relatives), followed by cycads, Gnetales (Gnetophyta, Ephedra and Welwitschia), and Ginkgo (a single living species).

Source: http://en.wikipedia.org/wiki/Gymnosperms
Givesia media ZŠ500
Glyptostrobus europaeus p2661
Glyptostrobus europaeus p2670
Glyptostrobus europaeusBùžek (1971), Pl. 7, fig. 5, 6 ÈB4
Glyptostrobus europaeusBùžek (1971), Pl. 7, fig. 3, 4 ÈB3
Glyptostrobus europaeusAD, Bùžek (1971) ÈB31
Glyptostrobus europaeusAD Bùžek (1971) ÈB348
Glyptostrobus europaeusBù?ek, Holý, Kvaèek (1976)Pl. II, fig. 4 ÈB678
Glyptostrobus europaeus p2672
Glyptostrobus europaeusAD, Bùžek (1971) ÈB32
Glyptostrobus europaeusBùžek (1971), Pl. 7, fig. 7 ÈB10
Gomphostrobus bifidusŠimùnek (2017), Pl. 5, fig. 5 ZŠ660
Gomphostrobus bifidus ZŠ729
Gomphostrobus bifidus ZŠ742
Gomphostrobus bifidusŠimùnek et al. (2017?), Pl. 5, fig. 4 ZŠ669
Gomphostrobus bifidus ZŠ670
Gomphostrobus bifidus ZŠ659
Gracillopteris bergeroniiŠimùnek et al. (2017), Pl. 3, fig. 3 ZŠ637
Haliserites comosus XA261
Haliserites zonaroides XA255
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]