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

Odontopteris lingulata		ZŠ707
Odontopteris nemejcii	AD, Šimůnek a Cleal (2004)	ZŠ90
Odontopteris nemejcii	AD, Šimůnek a Cleal (2004)	ZŠ89
Odontopteris nemejcii	Šimůnek (2022), PL. 1, Fig. 6	ZŠ898
Odontopteris reichiana GUTB		ZŠ386
Odontopteris		ZŠ521
Pachytesta		ZŠ524
Paripteris gigantea		ZŠ615
Paripteris gigantea	Šimůnek (2004), Pl. 1-3	ZŠ144
Peltaspermum		ZŠ650
Peltaspermum	Šimůnek et al. (2017), Pl. 3, fig. 4	ZŠ642
Peltaspermum	Šimůnek et al. (2017), Pl.3, fig. 5	ZŠ644
Picea altaica	Bubík, Kvaček	MB1
Picea altaica	Bubík, Kvaček	MB4
Picea altaica	Bubík, Kvaček	MB2
Picea altaica	Bubík, Kvaček	MB3
Pinopsida Burnett, 1835		p4380
Pinus oviformis		p2688
Pinus oviformis		WA1
Pinus rigios (Unger) Ettinsghausen	Kvaček, Teodoridis, Zajícová (2015) Pl. 1, fig. 4	EK237

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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]