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

Arnhardtia scheibei		ZŠ636
Arnhardtia scheibei		ZŠ703
Arnhardtia scheibei	Šimůnek at al. (2017), Pl. 2, fig.8	ZŠ635
Arthropitys		p2616
Artisia approximata Budil, 2011		ZŠ827
Artisia approximata Budil, 2011		ZŠ558
Artisia approximata Budil, 2011		ZŠ167
Artisia approximata Budil, 2011	Šimůnek a Libertín (2006), Pl. IV, fig. 4 (a), 5 (b)	ZŠ105
Artisia approximata Budil, 2011	Šimůnek a Libertín (2006), Pl. IV, fig. 3	ZŠ104
Artisia Budil, 2011		ZŠ817
Aulacotheca idae Šimůnek&Drábková		ZŠ501
Aulacotheca idae Šimůnek&Drábková		ZŠ502
Aulacotheca idae Šimůnek&Drábková		ZŠ506
Aulacotheca Halle, 1933		ZŠ503
Autunia conferta	Šimůnek at al. (2017), Pl. 2, fig.5	ZŠ631
Autunia conferta		ZŠ189
Autunia conferta		ZŠ194
Autunia conferta		ZŠ868
Autunia conferta	Šimůnek (2022), PL. 7, Fig. 3	ZŠ894
Autunia naumannii		ZŠ685

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]