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The way it works

BY: Martin Sanchez &  Samantha Reyes

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PrimaryProducers

PrimaryConsumers

SecondaryConsumers

TertiaryConsumers The Energy Flow

6CO2+6H2O→6C6H12O6+6O2

Sunlight

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The age of the dinosaurs dawned some

240 million years ago –

the time to which the oldest known dinosaur dates. Identified from fossil fragments in Madagascar, the kangaroo-size animal belonged

to a group of primitive plant-eaters known as prosauropods. Better-

known pioneering dinosaurs come from fossils uncovered in

 Argentina. These two-legged meat-eaters included Eoraptor, an agile

hunter armed with sharp claws that grew to about three feet long,

and the fearsome Herrerasaurus, which measured up to 20 feet in

length.

Supercontinent Breaks Up – The giant supercontinent of Pangaea began breaking up toward the

end of the Triassic.

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o Small Furry Animals Appear

Mammals emerged from the terminal decline of their immediate ancestors, the therapsid

mammal-like reptiles. The few therapsids that managed to survive the Permian mass

extinction included mini, burrowing species that scientists think may hav e been warm-

blooded and covered in insulating fur.

o Dinosaurs Dominate the Earth

 – Vulcanodon, plant-eating sauropod Dilophosaurus powerful, two-legged hunter that

weighed up to half a ton.  Dilophosaurus was among the forerunners of the carnivorous

theropod dinosaurs, the group that included T. rex.

oBirds First Take Wing

o Birds became airborne some 150 million years ago, the earliest record coming from a well-

preserved fossil discovered in Germany in 1861. The fossil showed a creature with

unmistakable wing feathers but also reptilian features, such as a bony tail, arm claws, andsharp teeth.

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•

Flowering Plants Begin to Bloom – Flowering plants bloom until the Cretaceous that they flourished,

encouraged by a predominately warm, mild climate. They included

broad-leaved trees, which started replacing conifers, ferns, and cycads,

while flowers triggered the evolution of pollinating insects such as

bees. Plant-eating dinosaurs now had a greater range of feedingoptions since flowering plants meant much more ground vegetation.

New types of browsing dinosaurs appeared, including squat, armor-

plated species. 

• Dinosaurs Go Extinct – The end of the Cretaceous, 65 million years ago, was signaled by a

massive extinction event that wiped out the non-avian dinosaurs. Up

to 50 percent of the planet's animal and plant species disappeared.

Other notable victims included giant marine reptiles, mosasaurs, and

the flying pterosaurs.

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Creditshttp://www.bing.com/ 

http://science.nationalgeogra

phic.com/science/prehistoric-

world/prehistoric-time-line/ 

http://www.google.com/ 

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Thanks to!!!

RinLen