Dinosaur Club
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While decades of research point to an asteroid impact at Chicxulub crater as the end of the dinosaurs' reign 66 million years ago, scientists weren't always so sure what happened to these mesmerizing creatures.
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Dinosaur
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posted by cure_lovely
Aardonyx
An early stage in the evolution of sauropods.

Abrictosaurus
An early relative of Heterodontosaurus.

Abrosaurus
A close Asian relative of Camarasaurus.

Abydosaurus
The intact skull of this sauropod was discovered in 2010.

Acanthopholis
No, it's not a city in Greece.

Achelousaurus
Might this have been a growth stage of Pachyrhinosaurus?

Acristavus
This early hadrosaur lacked any ornamentation on its skull.

Acrotholus
North America's earliest bone-headed dinosaur.

Adamantisaurus
This titanosaur was named 50 years after its discovery.


Adeopapposaurus
A close relative of Massospondylus.

Aegyptosaurus
Guess...
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Source: http://landbeforetime.wikia.com/wiki/Etta
posted by GabsSaw
Pachycephalosaurs were among some of the last Dinosaur groups to appear. They lived 75-65 mya.


They are named after one of the best-known members of the group, Pachycephalosaurus.

Pachycephalosaurus means "thick-headed reptile," due to the domed and hugely thickened bone on the bahagian, atas of its skull--like a cyclist's crash helmet.

About 15 feet long from nose to tail, Pachycephalosaurus lived in Montana, South Dakota, and Wyoming.

Stegoceras, which also lived in North America, was about 8 feet long, with a body the size of a goat.

Homalocephale was about 10 feet long and had a flatter skull. It lived in East Asia.

Pachycephalosaurs may have defended themselves sejak loweringtheir heads and charging at their enemies.

At breeding time, the males may have engaged in head-butting contests, as some kambing biri-biri and goats do today.
posted by GabsSaw
The First living things on earth were single-celled bacteria an cyanobacteria, also known as blue-green algae.

Blue-green algae emerged about 3,500 mya.(million years ago).
It contains chlorophyll and was the first living organism to use photosynthesis atau make energy using sunlight.

Over millions of years, the algae was able to produce enough oxygen to help lebih complex organisms to evolve.

True algae, which is regarded as a plant, evolved around 1,000 mya.

sejak 550 mya, multi celled plants began to appear, including seaweeds.

Algae and lichens were the first plants to appear on land.

Bryophyte plants emerged on land around 440 mya. Bryophytes are simple, seedless green plants.

Unlike vascular plants, which rvolved later, bryophytes cannot grow high above the ground because they do not have stems.
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