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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
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 13 ČB411
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 9 ČB477
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 11, 12 ČB60
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 4 ČB396
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 8 ČB473
Ulmus pyramidalisBůžek (1971), Pl. 21, fig. 5 ČB475
Ulmus pyramidalisBůžek (1971), Pl. 21, fig. 3 ČB357
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 2 ČB363
Ulmus pyramidalisBůžek (1971), Pl. 21, fig. 7 ČB367
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 14 ČB395
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 10 ČB405
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 10 ČB407
Ulmus pyramidalisAD Bůžek (1971) ČB408
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 16 ČB478
Ulmus pyramidalisBůžek (1971), Pl. 21, fig. 1 ČB479
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 7 ČB413
Ulmus pyramidalisAD Bůžek (1971) ČB417
Ulmus pyramidalisAD Bůžek (1971) ČB419
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 5 ČB358
Ulmus pyramidalisAD Bůžek (1971) ČB359
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]