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Flowering plants

      The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies (derived characteristics). These characteristics include flowers, endosperm within the seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from gymnosperms around 245–202 million years ago, and the first flowering plants known to exist are from 140 million years ago. They diversified enormously during the Lower Cretaceous and became widespread around 100 million years ago, but replaced conifers as the dominant trees only around 60–100 million years ago.

Source: http://en.wikipedia.org/wiki/Flowering_plant
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 9 ČB105
Acer tricuspidatumBůžek (1971), Pl. 35, fig. 13 ČB105
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 5, Pl. 39, fig. 4 ČB15
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 8 ČB18
Acer tricuspidatumBůžek (1971), Pl. 35, fig. 9 ČB103
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 4 ČB23
Acer tricuspidatumKvaček a Walther (2004), Pl. 1, fig. 9; text. fig. 3. 10 MP40
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 2 ČB101
Acer tricuspidatumBůžek (1971), Pl. 35, fig. 14 ČB87
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 10 ČB27
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 7 ČB30
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 11 ČB26
Acer tricuspidatumBůžek (1971), Pl. 38, fig. 2 ČB104
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 1 ČB110
Acer tricuspidatumBůžek (1971), Pl. 36, fig. 6 ČB102
Acer trilobatum p2938
Acer trilobatum p2658
Acer trilobatum p4764
Acer trilobatum p2941
Acer trilobatum p2931
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]