posted on Jan, 1 2015 @ 07:57 AM
They say the first bacterial life on Earth took hold approximately 4 Billion years ago.
Its hard to imagine such a span of time..
It took another 2 billion years for the first Eukaryotes to appear - cells with nuclei and organelles. (This represents 50% / *half* of the entire
span of life on earth.)
It took another billion years for the first tiny marine animals to appear (3 billion years represents 75% of the span of life on Earth), and the first
plants and first vertebrates (animals with a spinal chord like us humans have) first appeared only approximately 500 million years ago (already 88% of
the entire span of life on Earth).
Reflecting on this, at this point in Earth-life's development, it makes perfect sense that vertebrate fish share 85% of our DNA.
The first primates (or members of our order) came into existence only 65 to 50 million years ago (The time elapsed from the beginning of life on Earth
represents 98.8% of the entire span).
Early primate Purgatorius
The family of great apes appeared 20 million years ago and "anatomically modern humans (AMH)" or "anatomically modern Homo sapiens (AMHS)" only
200,000 years ago.
Our existence on Earth as anatomically modern humans only represents 0.005% of the span of life here on Earth.
They say if we outstretched our arms horizontally, and if the distance from fingertip to fingertip represented the span of life here on Earth, then
our existence represents only the tip of a fingernail. If we filed that fingernail, then we can wipe out the entire span of time that is represented
with humans on Earth.
edit on 1-1-2015 by nOraKat because: (no reason given)