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Fern s.l. (Pteridophyta)

      A fern is any one of a group of about 12,000 species of plants belonging to the botanical group known as Pteridophyta.Unlike mosses, they have xylem and phloem (making them vascular plants). They have stems, leaves, and roots like other vascular plants. Ferns reproduce via spores and have neither seeds nor flowers. By far the largest group of ferns are the leptosporangiate ferns, but ferns as defined here (also called monilophytes) include horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns. The term pteridophyte also refers to ferns and a few other seedless vascular plants (see classification section below). A pteridologist is a specialist in the study of pteridophytes in a broader sense that includes the more distantly related lycophytes. Ferns first appear in the fossil record 360 million years ago in the Carboniferous but many of the current families and species did not appear until roughly 145 million years ago in the late Cretaceous (after flowering plants came to dominate many environments).

Source: http://en.wikipedia.org/wiki/Fern
Taeniopteris multinervisŠimůnek a Martínek (2009), Pl. 4, fig. 6 ZŠ201
Tempskya varians p4491
Tempskya varians p5957
Triletes nemejciKalibová (1951), Pl. V, fig. 5 WA2
Triletes nemejciKalíbová (1951), Pl. I. (5), obr. 5 YA1384
TriletesKnobloch (1984), Pl. II, fig. 9 EK103
TriletesKnobloch (1984), Pl. II, fig. 8 EK129
TriletesKnobloch (1984), Pl. II, fig. 10 EK102
Triletes spuriusKnobloch (1984), Pl. I, fig. 2 EK199
Triletes spuriusKnobloch (1984), Pl. XV, fig. 11 EK78
Triletes spuriusKnobloch (1984), Pl. I, fig. 2 EK120
Triletes spuriusKnobloch (1984), Pl. XV, fig. 12 EK77
Triletes spuriusKnobloch (1984), Pl. I, fig. 4 EK200
Triletes spuriusKnobloch (1984), Pl. I, fig. 4 EK212
Triletes spuriusKnobloch (1980) PL. I, fig. 1 EK209
Triletes spuriusKnobloch (1984), Pl. II, fig. 4 EK119
Triletes spuriusKnobloch (1984), Pl. I, fig. 3 EK115
Triletes spuriusKnobloch (1984), Pl. I, fig. 5, 6 EK175
Triletes spuriusKnobloch (1984), Pl. II, fig. 3 EK174
Triletes spuriusKnobloch (1984), Pl. II, fig. 1 EK158
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]