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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 longifolia p2663
Ulmus longifolia p2654
Ulmus longifolis p2879
Ulmus longifolis p2707
Ulmus pyramidalisAD Bůžek (1971) ČB482
Ulmus pyramidalisAD Bůžek (1971) ČB416
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 15 ČB418
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 12 ČB84
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 2 ČB361
Ulmus pyramidalisAD Bůžek (1971) ČB369
Ulmus pyramidalisBůžek (1971), Pl. 19, fig. 6 ČB398
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 15 ČB399
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 13 ČB470
Ulmus pyramidalisAD Bůžek (1971) ČB472
Ulmus pyramidalisAD Bůžek (1971) ČB476
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 1 ČB79
Ulmus pyramidalisAD Bůžek (1971) ČB391
Ulmus pyramidalisBůžek (1971), Pl. 21, fig. 6 ČB401
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 8 ČB406
Ulmus pyramidalisBůžek (1971), Pl. 20, fig. 11 ČB409
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]