Evolutionary history of plants foliage consisted of fern-like fronds, although they were not closely related to ferns. The oldest fossil evidence of seed plants is of Late Devonian age, and they appear to have evolved out of an earlier group known as the progymnosperms. These early seed plants ranged from trees to small, rambling shrubs; like most early progymnosperms, they were woody plants with fern-like foliage. They all bore ovules, but no cones, fruit or similar. While it is difficult to track the early evolution of seeds, the lineage of the seed ferns may be traced from the simple trimerophytes through homosporous Aneurophytes. This
Kingdom of Plants 3D "Galapagos 3D", broadcast in 2013. A companion iPad app to the series was released on 23 May 2012, using video and imagery from the series to provide a virtual tour of the Royal Botanic Gardens, Kew. Of the app, Attenborough commented "You can swipe your finger across the tablet to make a plant flower and, not only that, put it back again; it’s quite fun." Kingdom of Plants 3D Kingdom of Plants 3D is a natural history documentary series written and presented by David Attenborough, which explores the world of plants. It was filmed over the course of a year