Past, Present and Future of Plant Diversity STC-GROUP 3 LAGUNA STATE POLYTECHNIC UNIVERSITY-SAN PABLO CITY CAMPUS, PHILIPPINES

3. PLANT ECOLOGY

11. PAST

12. Time Era Period Epoch Plants & Microorganisms 10, 000 years ago to present Cenozoic Quaternary Holocene Decline of some woody plants; rise of herbaceous plants. 2 Pleistocene Extinction of many plant species.

13. 5 Cenozoic Tertiary Pliocene Development of grasslands; decline of forest. 25 Miocene Flowering plants continue to diversify. 38 Oligocene Spread of forests; flowering plants. 55 Eocene Gymnosperms & flowering plants dominant. 65 Paleocene Many now-extinct woody flowering plants.

14. 144 Mesozoic Cretaceous Rise of flowering plants. 213 Jurassic Gymnosperms common. 248 Triasssic Gymnosperms dominant; ferns common.

15. 286 Paleozoic Permian Conifers diversify; cycads appear. 360 Carboniferous Forests of ferns, club mosses, horsetails, and gymnosperms; mosses & liverworts. 408 Devonian Plants diversify & become well-established; first forest; gymnosperms appear; bryophytes appear. 438 Silurian Vascular plants appear; algae dominant in aquatic environments. 505 Ordovician Marine algae dominant. 570 Cambrian Algae; bacteria & cyanobacteria; fungi.

16. Archaeamphora longicervia Cooksonia

18. PRESENT

21. FUTURE

23. Crocodilian nepenthes Plants at Planet Mars