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The Evolution of Giant Panda Bears
105
Evolution of the Giant Panda
Ailuropoda melanoleuca
Diet
99% bamboo!! 20-30 lbs/day!
Other 1% vegetables or meat
The Evoltuion of the Radial and Tibial Sesamoid Bone
Giant Pandas have an enlarged radial and tibial sesamoid
helps to hold bamboo and climb trees
Other bears have these bones but they are not developed
References
First Known Ancestor
Kretzoiarctos
http://www.pandasliveon.com/giantpandas/interesting-life-of-giant-pandas.html
http://www.gityasome.com/PandaBearHistory.shtml
http://bioexpedition.com/giant-panda-bear/
http://www.nytimes.com/2012/11/20/science/link-to-oldest-ancestor-of-panda-bear-found-in-spain.html?_r=0
http://a-z-animals.com/animals/giant-panda-bear/
http://www.create.ab.ca/pandas-a-major-problem-for-evolution/
http://www.sci-news.com/paleontology/article00724.html
http://animals.pawnation.com/lifestyle-giant-panda-its-endangerment-1904.html
Habitat
Behavior and Lifestyle
First fossils found in the Iberian Peninsula in Spain
Fossil jaws and teeth 11.6 million years old
Origin of lineage in forest of Europe during middle Miocene
Humid and moderately warm
Omniverous
Meat, fruit, plant stems and leaves
Fossil jaws and teeth show that they were able to eat tough plant material
Pandas are the only living bear with this habit
About 130 pounds
Do not hibernate
Usually live alone
Skillful tree climbers
Spend most of their time eating or
sleeping
240-551 lbs
Small mountain regions in central China
Temperate forests with bamboo
Elevations between 5,000 and 13,000 feet
Closing Thoughts
A Walk Through Time
Pandas were first thought to be related to raccoons
The earliest pandas were no bigger than house cats and grew to their
giant size over many millions of years
In the 1970's DNA showed pandas to be members of the bear family