The Mesozoic and Cenozoic Eras

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Presentation transcript:

The Mesozoic and Cenozoic Eras Chapter 24 The Mesozoic and Cenozoic Eras

Mesozoic Era Cover Jacks Three

Triassic Environment Present-day _______ Mountains begin to form Rocky

Jurassic Environment Atlantic -modern ________ Ocean opening and Tethys Sea closing -____________ cover much of North America Shallow seas -Gulf of Mexico forms -terrane collisions along _____ coast west

Triassic and Jurassic Life cycads ________ – seed plants without flowers Conifers Ferns

Ginko ______ biloba – present day species leaf nearly identical to Mesozoic ancestor

Cretaceous Life angiosperms First _____________ (flowering plants) Coevolution of pollinating _________ insects

Cretaceous Environment Steady drop in global ______________ Widespread continental _____ _____________ climate Gulf coast _____ deposits form temperature seas Warm, moist oil

___________ Crater Chicxlub -___ million years ago -_____________ impact 10k diameter -massive volcanism -both created ________ rich rock found worldwide at Cretaceous-Paleogene boundary -___________ radiation; greenhouse warming; already stressed ecosystem -79% marine;15% land species ___________ 65 meteorite iridium ultraviolet extinct

Queens Two (Neogene and Paleogene are often grouped together as _________ Period) Tertiary

Paleocene Environment -Tethys Sea closes -before ________ collided with _________ the Tethys Sea separated them Africa Eurasia

Eocene Life Green River -_____________ Formation, Wyoming -large basins formed adjacent to ________ Mts and filled with river sediments -produced large deposits of low-sulfur ______ -enormous gas and oil deposits formed in Middle East Eocene Life Rocky coal

Oligocene Environment -Badlands of South Dakota -golden age of ________ mammals

Oligocence and Miocene Epochs Basin and Range _________________Province in Nevada, Utah, and Mexico -___________ mountains form from tensional forces in southwest US Fault block

Pliocene and Pleistocene Epochs Woolly mammoth -______________, _______________,____________ evolved ability to survive cold dire wolf sabre-toothed cat -series of major ice ages in the _____________ Pleistocene -hominids appear ________ mya 4 to 5 -modern humans appear _____ mya .3

Holocene Epoch Great Lakes form Last continental _________ retreat from United States Faulting in Basin and Range Province ____________ activity in Cascades and Yellowstone San Andreas Fault movement glaciers Volcanic

Holocene Epoch (continued) Burning of ____________ and removal of large _________ increases carbon dioxide levels and global temperature three degrees C since 1880 Human ________________ begins to deplete food sources, mineral and fossil fuel resources, and decrease biodiversity fossil fuels forests overpopulation

Evolution How are these animals similar and how are they different? What causes them to evolve? environmental change