Showing posts with label skull. Show all posts
Showing posts with label skull. Show all posts

Saturday 14 September 2013

What will be the future of Human Face?

Human Face by Dr. Pravin Yadav
Post No: 10 











Continuing from the post 7:  Evolving framework of Human Face 
James May answering few oddball questons


An interesting study was published by Artist and researcher Nickolay Lamm on Forbs site.


Today's human face is end result of 5-7 million years of evolution. It is very clear that as skull changed its shape face also morphed. If face of ape reflects rudimentary lifestyle, modern man face witnesses epic control over nature.
But What's next?
10000 years down the line how human face will look like?
Are we going to settle down on with existing features or we will modify it with according to future needs or whole human race will turn into Cyborgs?
Although it is a debatable topic. Post your comments and opinions.

Wednesday 11 September 2013

Evolving framework of Human Face


Post No: 7 






Why Chimpanzees look like Humans? Is Human face is ever evolving surface?
Answer lies in prehistory, anthropology and archaeology. Let me explain in simple words.

Actually, Humans diverged and evolved from long lineage with its closest living relative, Chimpanzees.
Human face consists of multiple layers, hard solid bone, skull at base, muscles mounted at both ends on bones is the flexible and deformable layer, fascia surface, dermal-fatty layer variable tissue depth depends on health and environmental conditions and the top epidermal surface also called as skin. In simple words face is surface wrapped on skull, thus skull can be considered as the framework of face.

Although as late as the time of 'Charles Darwin', was common to find people who thought there was a independent creation of every species and life form do not change from one generation to another. But Darwin’s five theories suggested :

  • Evolution: species come and go through time, while they exist they change.
  • Common descent: organisms are descended from one, or several common ancestors and have diversified from this original stock
  • Species multiply: the diversification of life involves populations of one species diverging until they become two separate species; this has probably occurred billions of times on earth!
  • Gradualism: evolutionary change occurs through incremental small changes within populations; new species are not created suddenly.
  • Natural selection: evolutionary change occurs through variation between individuals; some variants give the individual an extra survival probability.
Modern Humans are result of millions of years of evolutionary change and natural selection. 
Plan your visit to Smithsonian National Museum of natural History to have a look at preseved evidences of human origin.  

Image Credit: John Gurche
artist / Don Hurlbert, photographer

Sahelanthropus tchadensis

Sometime between 7 and 6 million years ago












Image Credit: Karen Carr Studio


Orrorin tugenensis

Sometime between 6.2 and 5.8 million years ago










Between about 5.8 and 5.2 million years ago












Image Credit: Karen Carr Studio

About 4.4 million years ago












About 4.2 to 3.9 million years ago










Image Credit: John Gurche,
artist / Chip Clark, photographer

Between about 3.85 and 2.95 million years ago












Australopithecus garhi

 About 2.5 million years ago










Paranthropus aethiopicus

About 2.7 to 2.3 million years ago










Image Credit: John Gurche,
artist / Chip Clark, photographer

About 3.3 to 2.1 million years ago











Image Credit: Karen Carr Studio

Homo rudolfensis

About 1.9 million to 1.8 million years ago










Australopithecus sediba


Between 1.977 and 1.98 million years ago










Image Credit: Karen Carr Studio

Homo habilis


2.4 million to 1.4 million years ago












Image Credit: Karen Carr Studio

Paranthropus robustus

About 1.8 to 1.2 million years ago











Image Credit: John Gurche,
artist / Chip Clark, photographer

Paranthropus boisei

About 2.3 to 1.2 million years ago












Image Credit: John Gurche,
artist / Chip Clark, photographer

Homo heidelbergensis


About 700,000 to 200,000 years ago













Image Credit: John Gurche,
artist / Chip Clark, photographer



Homo erectus

Between about 1.89 million and 143,000 years ago











Image Credit: John Gurche,
artist / Chip Clark, photographer

Homo neanderthalensis


About 200,000 - 28,000 years ago












Image Credit: John Gurche,
artist / Chip Clark, photographer

Homo 
floresiensis

About 95,000 – 17,000 years ago












Image Credit: Human Origins Program,
Smithsonian Institution

Homo s
apiens

About 200,000 years ago to present










Following link shows the Human Family Tree and other variations of human faces.
http://humanorigins.si.edu/evidence/human-family-tree








Biology teacher Andrew Douch makes comparisions between the skull of an ancient Hominin (Australopithecus afarensis) and a modern hominin ( Homo sapiens)

But What's next?