“Mesozoic” = “Middle life”• Meso= between• Zoon= living being

Dinosaurs• Evolution• Extinction

248 million years ago 65 million years ago• Lasted about 180 million years

Continental drift

Hot climate

Evolution and

diversification

225 to 195

135 to 65 195 to

135

PHANEROZOIC EON

STOP700 different

species of dinosaurs have been identified

and named.

Pangea• One super continentClimate• Hot, dry

• 6ºC to 12ºC higher

• SeasonsDinosaurs appeared• Small, fast

Dromiceiomimus

Dinosaurs appeared• Small, fastRapid evolution• Fishes• Insects• Reptiles• Cone-bearing plantsEarliest mammals• Very small

Longest dinosaur name: Micropachycephalosaurus

Did you know?

Pangea starts breaking• Laurasia and Gondwana.Climate• Warm, moist• No polar ice= flooded

areas

Dinosaurs reached greatest sizeEvolved deriveed charater:

feathers• Archaeopteryx• Dinosaur-like bird

Separation continues• Volcanic activityClimate• Sea levels dropped• Season are back!

DiversityT-Rex (Tyrannosaurus

rex)Flying reptiles and birdsTurtles, crocodrilesFishes and marine

invertebrates • PlesiosaursLeafy trees, shrubs,

flowering plants

Which was the

fiercest dinosaur?

T-REX

Utahraptor

•Destructive events•Meteorite impact•10km wide•Mexico

•Volcanic eruption

•Mass extinction

•70% life form•All dinosaurs

?…MAMMALS BirdsMany plants (ferns)Flowered treesSmall lizards/crocodiles/alligators/turtlesFish, squids, sharks, etc.