In my continued research on whether or not rh negativity is a Neanderthal trait, I have come across a video and a chart indicating that indeed the areas where Neanderthals have not been found are Africa and Asia where the amount of rh negatives is the lowest. The research continues. Here is the material I have found today:
More information on Wikipedia
About cranial capacity:
Cranial capacity is a measure of the volume of the interior of the cranium (also called the braincase or brainpan) of those vertebrates who have both a cranium and a brain. The most commonly used unit of measure is the cubic centimetre or cc. The volume of the cranium is used as a rough indicator of the size of the brain, and this in turn is used as a rough indicator of the potential intelligence of the organism. However, larger cranial capacity is not always indicative of a more intelligent organism, since larger capacities are required for controlling a larger body, or in some cases are an adaptive feature for life in a colder environment.
But according to the chart, Neanderthals were smaller than us on an average, so it would work in reverse.
Neurological functions are determined more by the organization of the brain rather than the volume. Individual variability is also important when considering cranial capacity, for example the average Neanderthal cranial capacity for females is 1300 cc and 1600 for males (Stanford, 2009, 301). In an attempt to use cranial capacity as an objective indicator of brain size, the encephalization quotient (EQ) was developed in 1973 by Harry Jerison. It compares the size of the brain of the specimen to the expected brain size of animals with roughly the same weight (Campbell et al., 2006, 346). This way a more objective judgement can be made on the cranial capacity of an individual animal.
Examples of cranial capacity:
Orangutans: 275–500 cc
Chimpanzees: 275–500 cc
Gorillas: 340–752 cc
Humans: 1200–1850 cc
Neanderthals: 1100–1900 cc
Cranial nerves are nerves that emerge directly from the brain, in contrast to spinal nerves which emerge from segments of the spinal cord. In humans, there are traditionally 12 pairs of cranial nerves. Only the first and the second pair emerge from the cerebrum; the remaining 10 pairs emerge from the brainstem.
And according to this video around 4% of the DNA in people from those regions matches the Neanderthal DNA:
But how about the Americas?
So let’s take this one step further:
Could it be that the Homo Neanderthalis and the Homo Erectus interbred and formed what we are today, the Homo Sapiens?
According to the chart,
Homo Erectus has been around 1.8 Million to 200,000 years ago.
Neanderthals have been around 350,000 to 30,000 years ago and
Homo Sapiens as we know it has been around 200,000 years ago until today.
Is there an indicator in regards to how many Neanderthals were on earth vs. Homo Erectus during the 350,000 to 200,000 years ago 150,000 year time frame in which both species inhabited the earth simultaneously?
Early Neanderthals lived in the Last Glacial age for a span of about 100,000 years. Because of the damaging effects the glacial period had on the Neanderthal sites, not much is known about the early species. Countries where their remains are known include most of Europe south of the line of glaciation, roughly along the 50th parallel north, including most of Western Europe, including the south coast of Great Britain, Central Europe and the Balkans, some sites in Ukraine and in western Russia and outside of Europe in the Zagros Mountains and in the Levant. It is estimated that the total Neanderthal population across this habitat range numbered at around 70,000 at its peak.
Here are some more of my thoughts on the subject matter:
Sorry about the bad quality of the video.
The research continues …
I will also post more Neanderthal related material on our Neanderthals page.
~ Mike Dammann